Necrogenic Host

When Necrogenic Host enters the battlefield, Zombie creatures you control gain Deathtouch until end of turn.
When Necrogenic Host dies, put a -1/-1 counter on each non-Zombie creature that attacked or blocked this turn.
Reanimate {3}{b}{g} (Exile a number of cards from your graveyard equal to this cards converted mana cost. If you do, put this onto the battlefield.)