Ravenous Trap [Zendikar] Forest Island Mountain put a +2/+2 counter on

put a +2/+2 counter on each Vampire you control that dealt damage to that creature this turn

sacrifice Contamination unless you sacrifice a creature

Biologist enters the battlefield

"Our researchers noted a sense of euphoria and claimed to hear incomprehensible voices

{0}: The next 1 damage that would be dealt to Outrider en-Kor this turn is dealt to target creature you control instead

Ravenous Trap [Zendikar] Forest Island Mountain put a +2/+2 counter onSet: Zendikar Type: Instant Trap Rarity: Uncommon Cost: {2}{B}{B} If an opponent had three or more cards put into their graveyard from anywhere this turn, you may pay {0} rather than pay this spell's mana cost. Exile target player's graveyard.