at the beginning of your upkeep, put a +1/+1 counter on necroplasm.
at the beginning of your end step, destroy each creature with converted mana cost equal to the number of +1/+1 counters on necroplasm.
dredge 2 (if you would draw a card, instead you may put exactly two cards from the top of your library into your graveyard. if you do, return this card from your graveyard to your hand. otherwise, draw a card.)