Add a couple of Reqs I found useful.

src/com/massivecraft/mcore/cmd/req/ReqAnd.java

@@ -0,0 +1,64 @@
+package com.massivecraft.mcore.cmd.req;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+
+import org.bukkit.command.CommandSender;
+
+import com.massivecraft.mcore.cmd.MCommand;
+
+public class ReqAnd extends ReqAbstract
+{
+	private static final long serialVersionUID = 1L;
+	
+	// -------------------------------------------- //
+	// INSTANCE & CONSTRUCT
+	// -------------------------------------------- //
+	
+	public static ReqAnd get(Req... reqs) { return new ReqAnd(reqs); }
+	public ReqAnd(Req... reqs)
+	{
+		this(Arrays.asList(reqs));
+	}
+	
+	public static ReqAnd get(Collection<Req> reqs) { return new ReqAnd(reqs); }
+	public ReqAnd(Collection<Req> reqs)
+	{
+		this.reqs = Collections.unmodifiableList(new ArrayList<Req>(reqs));
+	}
+	
+	// -------------------------------------------- //
+	// FIELDS
+	// -------------------------------------------- //
+	
+	private final List<Req> reqs;
+	public List<Req> getReqs() { return this.reqs; }
+	
+	// -------------------------------------------- //
+	// OVERRIDE
+	// -------------------------------------------- //
+	
+	@Override
+	public boolean apply(CommandSender sender, MCommand command)
+	{
+		return this.getFirstFailedSubreq(sender, command) == null;
+	}
+	
+	@Override
+	public String createErrorMessage(CommandSender sender, MCommand command)
+	{
+		return this.getFirstFailedSubreq(sender, command).createErrorMessage(sender, command);
+	}
+	
+	public Req getFirstFailedSubreq(CommandSender sender, MCommand command)
+	{
+		for (Req req : this.getReqs())
+		{
+			if (!req.apply(sender, command)) return req;
+		}
+		return null;
+	}
+}

src/com/massivecraft/mcore/cmd/req/ReqIsntCertainSender.java

@@ -0,0 +1,46 @@
+package com.massivecraft.mcore.cmd.req;
+
+import org.bukkit.command.CommandSender;
+
+import com.massivecraft.mcore.cmd.MCommand;
+import com.massivecraft.mcore.mixin.Mixin;
+import com.massivecraft.mcore.util.SenderUtil;
+import com.massivecraft.mcore.util.Txt;
+
+public class ReqIsntCertainSender extends ReqAbstract
+{
+	private static final long serialVersionUID = 1L;
+	
+	// -------------------------------------------- //
+	// INSTANCE & CONSTRUCT
+	// -------------------------------------------- //
+	
+	public static ReqIsntCertainSender get(CommandSender sender) { return new ReqIsntCertainSender(sender); }
+	public ReqIsntCertainSender(CommandSender sender) { this.senderId = SenderUtil.getSenderId(sender); }
+	
+	public static ReqIsntCertainSender get(String senderId) { return new ReqIsntCertainSender(senderId); }
+	public ReqIsntCertainSender(String senderId) { this.senderId = senderId; }
+	
+	// -------------------------------------------- //
+	// FIELDS
+	// -------------------------------------------- //
+	
+	private final String senderId;
+	public String getSenderId() { return this.senderId; }
+	
+	// -------------------------------------------- //
+	// OVERRIDE
+	// -------------------------------------------- //
+	
+	@Override
+	public boolean apply(CommandSender sender, MCommand command)
+	{
+		return !this.getSenderId().equalsIgnoreCase(SenderUtil.getSenderId(sender));
+	}
+	
+	@Override
+	public String createErrorMessage(CommandSender sender, MCommand command)
+	{
+		return Txt.parse("<b>Player can't be <h>%s<b>.", Mixin.getDisplayName(this.getSenderId()));
+	}
+}