Eavesdropping Waiter

Eavesdropping Waiter enters the battlefield
under an opponent's control.

Infiltrate - As long as Eavesdropping Waiter is
under the control of a player other than it's
owner, it gets -1/-1 and has "This creature must
attack each combat if able and can't be blocked."

Whenever Eavesdropping Waiter deals combat
damage to its owner, that player gains 1 life and
draws a card.

"It's simple. In and out. Kill them if possible."