Tar Fiend

Tar Fiend

Creature - Elemental | Power/Toughness: 4 / 4 (CMC 6)
Devour 2 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with twice that many +1/+1 counters on it.)
When Tar Fiend enters the battlefield, target player discards a card for each creature it devoured.