Geralf, the Fleshwright (Showcase) (OTJ-287) - Outlaws of Thunder Junction: (Showcase) (Borderless)

Whenever you cast a spell during your turn other than your first spell that turn, create a 2/2 blue and black Zombie Rogue creature token.
Whenever a Zombie you control enters, put a +1/+1 counter on it for each other Zombie that entered the battlefield under your control this turn.