Shanka, Rakdos Slaughterer

Haste, deathtouch
Whenever Shanka deals combat damage to a player, you may have that player discard a card. If you do, Shanka deals X damage to any target, where X is equal to the converted mana cost of the card discarded this way.
"You know what your problem is? You take this job too serious! Let me show you how to have some fun!"