Mixologist

Commander creatures you own named Razzil, the Alchemist have “{T}, Sacrifice X Treasures: Put a stun counter on this creature. Then choose a player at random. If an opponent is chosen, this creature deals X damage to that player. If you are chosen, this creature deals X damage to itself.” (You can choose this Facet as a second commander only if Razzil, the Alchemist is your commander.)