Atemsis, All-Seeing{3}{U}{U}{U}

Legendary Creature — Sphinx

Flying
{2}{U}, {T}: Draw two cards, then discard a card.
Whenever Atemsis, All-Seeing deals damage to an opponent, you may reveal your hand. If cards with at least six different mana values are revealed this way, that player loses the game.

4/5

Illustrated by Ryan Pancoast