Lord Skreech, Verminking

Ratstorm (When you cast this spell, create a 1/1
black rat creature token for each spell cast this turn.)


The Dreaded Thirteenth Spell -
{b}{b}{b}, Sacrifice 13 Rats: Each opponent exiles the
top 13 cards of their library, then loses life equal to
the total mana value of cards they own exiled this
way. If an opponent loses exactly 13 life this way,
you lose the game.