Forgot to also pass MRE into ICommandExecutor.

src/main/java/net/pingex/dcf/commands/Command.java

@@ -1,5 +1,6 @@
 package net.pingex.dcf.commands;
 
+import sx.blah.discord.handle.impl.events.MessageReceivedEvent;
 import java.lang.reflect.Method;
 import java.util.Arrays;
 import java.util.Collections;
@@ -142,9 +143,9 @@ public abstract class Command implements ICommandExecutor
 			return new Command(name, aliases, description, isEnabled, usage)
 			{
 				@Override
-				public void execute(List<String> arguments) throws Throwable
+				public void execute(MessageReceivedEvent event, List<String> arguments) throws Throwable
 				{
-					toExecute.execute(arguments);
+					toExecute.execute(event, arguments);
 				}
 			};
 		}
@@ -157,7 +158,14 @@ public abstract class Command implements ICommandExecutor
 		 */
 		public Command build(Method target, Object invokable)
 		{
-			return build(arguments -> target.invoke(invokable));
+			return new Command(name, aliases, description, isEnabled, usage)
+			{
+				@Override
+				public void execute(MessageReceivedEvent event, List<String> arguments) throws Throwable
+				{
+					target.invoke(invokable, event, arguments);
+				}
+			};
 		}
 	}
 

src/main/java/net/pingex/dcf/commands/ICommandExecutor.java

@@ -1,5 +1,6 @@
 package net.pingex.dcf.commands;
 
+import sx.blah.discord.handle.impl.events.MessageReceivedEvent;
 import java.util.List;
 
 /**
@@ -8,5 +9,5 @@ import java.util.List;
 @FunctionalInterface
 public interface ICommandExecutor
 {
-	void execute(List<String> arguments) throws Throwable;
+	void execute(MessageReceivedEvent event, List<String> arguments) throws Throwable;
 }