Nemesis, S.T.A.R.S. Killer

When this card comes into play, exile Leon
and Jill from in play and in your graveyard.
{t}{x}{b}: Create X 2/2 Zombie Tokens.
{5}: Destroy All Zombie Tokens. Gain X/X for
each Zombie Token destroyed this way.
Annihilator 5 (Whenever this creature attacks, defending player sacrifices 5 permanents.)