diff --git a/.gitignore b/.gitignore
index 3c0ce68..8ea7e15 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,3 +23,7 @@
 hs_err_pid*
 *.iml
 *.xml
+*.txt
+*.lst
+*.lst
+target/classes/config.yml
diff --git a/pom.xml b/pom.xml
index 0fecaf0..0746069 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>io.github.paldiu.simplexcore</groupId>
     <artifactId>SimplexCore</artifactId>
-    <version>1.1.0-EDGE</version>
+    <version>1.13-BLEEDING</version>
     <packaging>jar</packaging>
 
     <name>SimplexCore</name>
diff --git a/src/main/java/io/github/paldiu/simplexcore/ban/BanFactory.java b/src/main/java/io/github/paldiu/simplexcore/ban/BanFactory.java
index e43cb78..14f182d 100644
--- a/src/main/java/io/github/paldiu/simplexcore/ban/BanFactory.java
+++ b/src/main/java/io/github/paldiu/simplexcore/ban/BanFactory.java
@@ -50,6 +50,7 @@ public final class BanFactory {
 
     /**
      * Creates a new instance of the abstract class Ban.
+     *
      * @return A new ban instance.
      */
     public Ban create() {
diff --git a/src/main/java/io/github/paldiu/simplexcore/ban/BanType.java b/src/main/java/io/github/paldiu/simplexcore/ban/BanType.java
index 05acec2..fc29ef4 100644
--- a/src/main/java/io/github/paldiu/simplexcore/ban/BanType.java
+++ b/src/main/java/io/github/paldiu/simplexcore/ban/BanType.java
@@ -10,10 +10,6 @@ public enum BanType {
         this.prefix = prefix;
     }
 
-    public String getPrefix() {
-        return prefix;
-    }
-
     public static String value(BanType type) {
         if (type.equals(PERMANENT)) {
             return "Permanent";
@@ -23,4 +19,8 @@ public enum BanType {
             return "Unknown";
         }
     }
+
+    public String getPrefix() {
+        return prefix;
+    }
 }
diff --git a/src/main/java/io/github/paldiu/simplexcore/command/SimplexCommand.java b/src/main/java/io/github/paldiu/simplexcore/command/SimplexCommand.java
index 42e961a..be547aa 100644
--- a/src/main/java/io/github/paldiu/simplexcore/command/SimplexCommand.java
+++ b/src/main/java/io/github/paldiu/simplexcore/command/SimplexCommand.java
@@ -2,7 +2,6 @@ package io.github.paldiu.simplexcore.command;
 
 import io.github.paldiu.simplexcore.utils.Constants;
 import io.github.paldiu.simplexcore.utils.Utilities;
-import jdk.jfr.BooleanFlag;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
@@ -16,7 +15,7 @@ import java.util.List;
 import java.util.UUID;
 
 public abstract class SimplexCommand implements CommandExecutor, TabCompleter {
-    @BooleanFlag
+
     public boolean isPlayer(CommandSender sender) {
         return sender instanceof Player;
     }
@@ -33,7 +32,7 @@ public abstract class SimplexCommand implements CommandExecutor, TabCompleter {
 
     @Nullable
     public Player getPlayer(CommandSender sender) {
-        return isPlayer(sender) ? (Player)sender : null;
+        return isPlayer(sender) ? (Player) sender : null;
     }
 
     public void playerMsg(Player player, String... messages) {
diff --git a/src/main/java/io/github/paldiu/simplexcore/concurrent/SimplexTask.java b/src/main/java/io/github/paldiu/simplexcore/concurrent/SimplexTask.java
index 2f234a3..84899bd 100644
--- a/src/main/java/io/github/paldiu/simplexcore/concurrent/SimplexTask.java
+++ b/src/main/java/io/github/paldiu/simplexcore/concurrent/SimplexTask.java
@@ -7,6 +7,7 @@ import org.bukkit.scheduler.BukkitTask;
 import java.util.Date;
 import java.util.function.Consumer;
 
+// TODO: Rewrite this entire class and the task system to have more control over tasks.
 public abstract class SimplexTask implements Consumer<BukkitTask> {
     protected final long DELAY;
     protected final long INTERVAL;
@@ -29,13 +30,13 @@ public abstract class SimplexTask implements Consumer<BukkitTask> {
 
     public <T extends SimplexTask> void register(T task, SimplexAddon<?> plugin, boolean repeating, boolean delayed) {
         if (delayed && repeating) {
-            Constants.getScheduler().runTaskTimerAsynchronously(plugin, task, DELAY, INTERVAL);
+            Constants.getScheduler().runTaskTimer(plugin, task, DELAY, INTERVAL);
         } else if (delayed) {
-            Constants.getScheduler().runTaskLaterAsynchronously(plugin, task, DELAY);
+            Constants.getScheduler().runTaskLater(plugin, task, DELAY);
         } else if (repeating) {
-            Constants.getScheduler().runTaskTimerAsynchronously(plugin, task, 0L, INTERVAL);
+            Constants.getScheduler().runTaskTimer(plugin, task, 0L, INTERVAL);
         } else {
-            Constants.getScheduler().runTaskAsynchronously(plugin, task);
+            Constants.getScheduler().runTask(plugin, task);
         }
     }
 
diff --git a/src/main/java/io/github/paldiu/simplexcore/concurrent/TaskFactory.java b/src/main/java/io/github/paldiu/simplexcore/concurrent/TaskFactory.java
new file mode 100644
index 0000000..f5e3cb5
--- /dev/null
+++ b/src/main/java/io/github/paldiu/simplexcore/concurrent/TaskFactory.java
@@ -0,0 +1,4 @@
+package io.github.paldiu.simplexcore.concurrent;
+
+public final class TaskFactory {
+}
diff --git a/src/main/java/io/github/paldiu/simplexcore/config/Yaml.java b/src/main/java/io/github/paldiu/simplexcore/config/Yaml.java
index 329360f..570e3e8 100644
--- a/src/main/java/io/github/paldiu/simplexcore/config/Yaml.java
+++ b/src/main/java/io/github/paldiu/simplexcore/config/Yaml.java
@@ -1,10 +1,7 @@
 package io.github.paldiu.simplexcore.config;
 
-import io.github.paldiu.simplexcore.functional.Guard;
 import io.github.paldiu.simplexcore.plugin.SimplexAddon;
-import io.github.paldiu.simplexcore.utils.Bean;
 import io.github.paldiu.simplexcore.utils.Constants;
-import io.github.paldiu.simplexcore.utils.Utilities;
 import org.bukkit.configuration.ConfigurationSection;
 import org.bukkit.configuration.file.FileConfiguration;
 import org.bukkit.configuration.file.YamlConfiguration;
@@ -24,11 +21,11 @@ public final class Yaml implements IConfig {
 
     Yaml(SimplexAddon<?> plugin, String fileName, File directory, String resourcePath) {
         if (!fileName.endsWith(".yml")) {
-            fileName+=".yml";
+            fileName += ".yml";
         }
 
         if (!resourcePath.endsWith(".yml")) {
-            resourcePath+=".yml";
+            resourcePath += ".yml";
         }
 
         this.plugin = plugin;
diff --git a/src/main/java/io/github/paldiu/simplexcore/gui/AbstractGUI.java b/src/main/java/io/github/paldiu/simplexcore/gui/AbstractGUI.java
new file mode 100644
index 0000000..f865ebd
--- /dev/null
+++ b/src/main/java/io/github/paldiu/simplexcore/gui/AbstractGUI.java
@@ -0,0 +1,121 @@
+package io.github.paldiu.simplexcore.gui;
+
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.event.Listener;
+import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.InventoryHolder;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.*;
+
+public abstract class AbstractGUI implements InventoryHolder, IGUI {
+    private final Inventory INV;
+    private final Map<Integer, Action> actions;
+    private final UUID uuid;
+
+    private final List<Integer> validSize = new ArrayList<>(){{
+        add(9);
+        add(18);
+        add(27);
+        add(36);
+        add(45);
+        add(54);
+    }};
+
+    public static final Map<UUID, IGUI> invByUUId = new HashMap<>();
+    public static final Map<UUID, UUID> openInvs = new HashMap<>();
+
+    public AbstractGUI(int size, String name) {
+        uuid = UUID.randomUUID();
+        if (!validSize.contains(size)) {
+            throw new NumberFormatException("Inventory sizes must be a multiple of nine!");
+        }
+        INV = Bukkit.createInventory(null, size, name);
+        actions = new HashMap<>();
+        invByUUId.put(getInvUUId(), this);
+    }
+
+    @Override
+    public UUID getInvUUId() {
+        return uuid;
+    }
+
+    @NotNull
+    @Override
+    public Inventory getInventory() {
+        return INV;
+    }
+
+    @Override
+    public void setItem(int slot, @NotNull ItemStack stack, @Nullable Action action) {
+        INV.setItem(slot, stack);
+        if (action != null) {
+            actions.put(slot, action);
+        }
+    }
+
+    @Override
+    public void setItem(int slot, @NotNull ItemStack stack) {
+        setItem(slot, stack, null);
+    }
+
+    @Override
+    public void open(@NotNull Player player) {
+        player.openInventory(INV);
+        openInvs.put(player.getUniqueId(), getInvUUId());
+    }
+
+    @Override
+    public void close(@NotNull Player player) {
+        player.closeInventory();
+        openInvs.remove(player.getUniqueId());
+    }
+
+    @Override
+    public void delete() {
+        Bukkit.getOnlinePlayers().forEach(player -> {
+            UUID id = openInvs.get(player.getUniqueId());
+            if (id.equals(getInvUUId())) {
+                player.closeInventory();
+            }
+        });
+        invByUUId.remove(getInvUUId());
+    }
+
+    public static Map<UUID, IGUI> getInvByUUId() {
+        return invByUUId;
+    }
+
+    public static Map<UUID, UUID> getOpenInvs() {
+        return openInvs;
+    }
+
+    @Override
+    public Map<Integer, Action> getActions() {
+        return actions;
+    }
+
+    @Override
+    public ItemStack newItem(@NotNull Material material, @NotNull String name, String... lore) {
+        ItemStack item = new ItemStack(material, 1);
+        ItemMeta meta = item.getItemMeta();
+        if (meta == null) {
+            return item;
+        }
+        meta.setDisplayName(name);
+        ArrayList<String> metaLore = new ArrayList<>(Arrays.asList(lore));
+        meta.setLore(metaLore);
+        item.setItemMeta(meta);
+        return item;
+    }
+
+    @Override
+    public ItemStack newItem(@NotNull Material material, @NotNull String name) {
+        return newItem(material, name, "");
+    }
+}
diff --git a/src/main/java/io/github/paldiu/simplexcore/gui/Action.java b/src/main/java/io/github/paldiu/simplexcore/gui/Action.java
new file mode 100644
index 0000000..2d87fd6
--- /dev/null
+++ b/src/main/java/io/github/paldiu/simplexcore/gui/Action.java
@@ -0,0 +1,8 @@
+package io.github.paldiu.simplexcore.gui;
+
+import org.bukkit.entity.Player;
+
+@FunctionalInterface
+public interface Action {
+    void onClick(Player player);
+}
diff --git a/src/main/java/io/github/paldiu/simplexcore/gui/GUIHandler.java b/src/main/java/io/github/paldiu/simplexcore/gui/GUIHandler.java
new file mode 100644
index 0000000..aa51005
--- /dev/null
+++ b/src/main/java/io/github/paldiu/simplexcore/gui/GUIHandler.java
@@ -0,0 +1,38 @@
+package io.github.paldiu.simplexcore.gui;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.inventory.InventoryClickEvent;
+import org.bukkit.event.inventory.InventoryCloseEvent;
+
+import java.util.UUID;
+
+public final class GUIHandler implements Listener {
+    @EventHandler(priority = EventPriority.NORMAL)
+    public void invClick(InventoryClickEvent event) {
+        if (!(event.getWhoClicked() instanceof Player)) {
+            return;
+        }
+
+        Player player = (Player) event.getWhoClicked();
+        UUID pID = player.getUniqueId();
+        UUID invUUID = AbstractGUI.getOpenInvs().get(pID);
+
+        if (invUUID != null) {
+            event.setCancelled(true);
+            IGUI gui = AbstractGUI.getInvByUUId().get(invUUID);
+            Action action = gui.getActions().get(event.getSlot());
+            if (action != null) {
+                action.onClick(player);
+            }
+        }
+    }
+
+    @EventHandler(priority = EventPriority.NORMAL)
+    public void onClose(InventoryCloseEvent event) {
+        Player player = (Player) event.getPlayer();
+        AbstractGUI.getOpenInvs().remove(player.getUniqueId());
+    }
+}
diff --git a/src/main/java/io/github/paldiu/simplexcore/gui/IGUI.java b/src/main/java/io/github/paldiu/simplexcore/gui/IGUI.java
new file mode 100644
index 0000000..bd6d64e
--- /dev/null
+++ b/src/main/java/io/github/paldiu/simplexcore/gui/IGUI.java
@@ -0,0 +1,33 @@
+package io.github.paldiu.simplexcore.gui;
+
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Map;
+import java.util.UUID;
+
+public interface IGUI {
+    UUID getInvUUId();
+
+    Inventory getInventory();
+
+    void setItem(int slot, @NotNull ItemStack stack, @Nullable Action action);
+
+    void setItem(int slot, @NotNull ItemStack stack);
+
+    void open(@NotNull Player player);
+
+    void close(@NotNull Player player);
+
+    void delete();
+
+    Map<Integer, Action> getActions();
+
+    ItemStack newItem(@NotNull Material material, @NotNull String name, String... lore);
+
+    ItemStack newItem(@NotNull Material material, @NotNull String name);
+}
diff --git a/src/main/java/io/github/paldiu/simplexcore/sign/IUsableSign.java b/src/main/java/io/github/paldiu/simplexcore/sign/IUsableSign.java
index 0523067..ff4f9e7 100644
--- a/src/main/java/io/github/paldiu/simplexcore/sign/IUsableSign.java
+++ b/src/main/java/io/github/paldiu/simplexcore/sign/IUsableSign.java
@@ -14,4 +14,6 @@ public interface IUsableSign {
     String getSignText();
 
     void executeOnInteract();
+
+    String signTag();
 }
diff --git a/src/main/java/io/github/paldiu/simplexcore/utils/Constants.java b/src/main/java/io/github/paldiu/simplexcore/utils/Constants.java
index 46e05f2..6d0e6b0 100644
--- a/src/main/java/io/github/paldiu/simplexcore/utils/Constants.java
+++ b/src/main/java/io/github/paldiu/simplexcore/utils/Constants.java
@@ -14,11 +14,6 @@ import org.bukkit.scheduler.BukkitScheduler;
 import java.util.logging.Logger;
 
 public final class Constants {
-    // Utility class should not be instantiated.
-    private Constants() {
-        throw new AssertionError();
-    }
-
     private static final SimplexCore plugin = JavaPlugin.getPlugin(SimplexCore.class);
     private static final Server server = plugin.getServer();
     private static final Logger logger = plugin.getLogger();
@@ -27,6 +22,10 @@ public final class Constants {
     private static final DependencyManagement dpm = new DependencyManagement();
     private static final Yaml config = new YamlFactory(plugin).setDefaultPathways();
     private static final TimeValues time = new TimeValues();
+    // Utility class should not be instantiated.
+    private Constants() {
+        throw new AssertionError();
+    }
 
     public static SimplexCore getPlugin() {
         return plugin;
diff --git a/src/main/java/io/github/paldiu/simplexcore/utils/Utilities.java b/src/main/java/io/github/paldiu/simplexcore/utils/Utilities.java
index 88ff103..ba58e9a 100644
--- a/src/main/java/io/github/paldiu/simplexcore/utils/Utilities.java
+++ b/src/main/java/io/github/paldiu/simplexcore/utils/Utilities.java
@@ -2,11 +2,30 @@ package io.github.paldiu.simplexcore.utils;
 
 import io.github.paldiu.simplexcore.ban.BanType;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.SplittableRandom;
 import java.util.function.Consumer;
 import java.util.stream.Stream;
 
 public final class Utilities {
+    private static final SplittableRandom random = new SplittableRandom();
+    private static final SplittableRandom numbers = new SplittableRandom();
+    private static final List<Character> list = new ArrayList<>() {{
+        add('0');
+        add('1');
+        add('2');
+        add('3');
+        add('4');
+        add('5');
+        add('6');
+        add('7');
+        add('8');
+        add('9');
+        add('-');
+    }};
+
     //Utility class should not be instantiated.
     private Utilities() {
         throw new AssertionError();
@@ -41,22 +60,6 @@ public final class Utilities {
         return sb.toString();
     }
 
-    private static final SplittableRandom random = new SplittableRandom();
-    private static final SplittableRandom numbers = new SplittableRandom();
-    private static final List<Character> list = new ArrayList<>(){{
-        add('0');
-        add('1');
-        add('2');
-        add('3');
-        add('4');
-        add('5');
-        add('6');
-        add('7');
-        add('8');
-        add('9');
-        add('-');
-    }};
-
     private static char capitalize(char character) {
         if (list.contains(character)) {
             return character;
diff --git a/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst b/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
index 8f6ed4b..6b65c3b 100644
--- a/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
+++ b/target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
@@ -1,30 +1,51 @@
-io\github\paldiu\simplexcore\command\defaults\Command_info.class
-io\github\paldiu\simplexcore\listener\ServerPluginListener.class
 io\github\paldiu\simplexcore\command\CommandLoader.class
+io\github\paldiu\simplexcore\ban\BanType.class
 io\github\paldiu\simplexcore\command\CommandInfo.class
-io\github\paldiu\simplexcore\future\Announcer$1.class
-io\github\paldiu\simplexcore\plugin\AddonRegistry.class
 io\github\paldiu\simplexcore\command\CommandLoader$Registry.class
-io\github\paldiu\simplexcore\CoreState$1.class
 io\github\paldiu\simplexcore\utils\Constants$TimeValues.class
 io\github\paldiu\simplexcore\CoreState.class
-io\github\paldiu\simplexcore\config\YamlFactory.class
+io\github\paldiu\simplexcore\concurrent\TaskFactory.class
+io\github\paldiu\simplexcore\listener\DependencyListener$1.class
+io\github\paldiu\simplexcore\concurrent\SimplexTask.class
+io\github\paldiu\simplexcore\potion\PotionsFactory.class
 io\github\paldiu\simplexcore\plugin\SimplexAddon.class
 io\github\paldiu\simplexcore\chat\Messages.class
+io\github\paldiu\simplexcore\gui\Action.class
+io\github\paldiu\simplexcore\gui\GUIHandler.class
 io\github\paldiu\simplexcore\plugin\AddonManager.class
-io\github\paldiu\simplexcore\chat\ChatUtils.class
+io\github\paldiu\simplexcore\structures\Structure.class
+io\github\paldiu\simplexcore\gui\AbstractGUI.class
 io\github\paldiu\simplexcore\command\defaults\DefaultCommand.class
 io\github\paldiu\simplexcore\utils\Utilities.class
-io\github\paldiu\simplexcore\chat\TextComponentFactory.class
-io\github\paldiu\simplexcore\command\SimplexCommand.class
+io\github\paldiu\simplexcore\ban\BanFactory.class
 io\github\paldiu\simplexcore\math\Size.class
+io\github\paldiu\simplexcore\config\Path.class
 io\github\paldiu\simplexcore\utils\Bean.class
-io\github\paldiu\simplexcore\utils\Constants.class
-io\github\paldiu\simplexcore\future\SimplexTask.class
+io\github\paldiu\simplexcore\ban\Ban.class
 io\github\paldiu\simplexcore\config\JsonFactory.class
+io\github\paldiu\simplexcore\listener\DependencyListener.class
 io\github\paldiu\simplexcore\SimplexCore.class
 io\github\paldiu\simplexcore\utils\Trio.class
-io\github\paldiu\simplexcore\listener\SimplexListener.class
-io\github\paldiu\simplexcore\future\Announcer.class
+io\github\paldiu\simplexcore\config\IConfig.class
 io\github\paldiu\simplexcore\math\Cuboid.class
 io\github\paldiu\simplexcore\CoreState$State.class
+io\github\paldiu\simplexcore\concurrent\Announcer.class
+io\github\paldiu\simplexcore\command\defaults\Command_info.class
+io\github\paldiu\simplexcore\particle\IParticleEffect.class
+io\github\paldiu\simplexcore\structures\IStructure.class
+io\github\paldiu\simplexcore\concurrent\Announcer$1.class
+io\github\paldiu\simplexcore\plugin\AddonRegistry.class
+io\github\paldiu\simplexcore\CoreState$1.class
+io\github\paldiu\simplexcore\config\YamlFactory.class
+io\github\paldiu\simplexcore\potion\IPotionEffect.class
+io\github\paldiu\simplexcore\gui\AbstractGUI$1.class
+io\github\paldiu\simplexcore\chat\ChatUtils.class
+io\github\paldiu\simplexcore\gui\IGUI.class
+io\github\paldiu\simplexcore\chat\TextComponentFactory.class
+io\github\paldiu\simplexcore\command\SimplexCommand.class
+io\github\paldiu\simplexcore\ban\BanFactory$1.class
+io\github\paldiu\simplexcore\sign\IUsableSign.class
+io\github\paldiu\simplexcore\utils\Constants.class
+io\github\paldiu\simplexcore\ban\IBan.class
+io\github\paldiu\simplexcore\listener\SimplexListener.class
+io\github\paldiu\simplexcore\listener\DependencyListener$2.class