Nemesis of Mortals

Nemesis of Mortals

Creature - Snake | Power/Toughness: 5 / 5 (CMC 6)
This spell costs less to cast for each creature card in your graveyard.
: Monstrosity 5. This ability costs less to activate for each creature card in your graveyard. (If this creature isn't monstrous, put five +1/+1 counters on it and it becomes monstrous.)