Nightshade Assassin

{2}{B}{B} · Creature — Human Assassin · from $0.21

First strike

When this creature enters, you may reveal X black cards in your hand. If you do, target creature gets -X/-X until end of turn.

Madness {1}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Format legality