Dirty Rat

As this creature enters and whenever it attacks, stack two dice on top of it. (All dice must be stacked vertically, one on top of another.) This creature gets +1/+1 for each die in its stack. This creature attacks each combat if able. When the stack falls, sacrifice this creature.

Enchant creature As this Aura enters, choose a word. Whisper the chosen word: Tap enchanted creature.

Open a sealed Magic booster pack, reveal the cards, and put one of them into your hand. (Remove that card from your deck before beginning a new game.)

(T: Add R.)

Menace (This creature can't be blocked except by two or more creatures.) Other creatures you control wearing hats in their art have menace.

Say "Goblin S.W.A.T. Team": Put a +1/+1 counter on this creature unless an opponent swats the table within five seconds. Activate only once each turn.

(T: Add W.)

(T: Add G.)