Nightshade Assassin - Time Spiral Remastered Spoiler

Nightshade Assassin

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First strike

When Nightshade Assassin comes into play, you may reveal X black cards in your hand. If you do, target creature gets -X/-X until end of turn.

Madness 1B (If you discard this card, you may play it for its madness cost instead of putting it into your graveyard.)