Ashiok, Nightmare Weaver - Theros - 188

Legendary Planeswalker — Ashiok

Mana Cost: {1}{U}{B}

[+2]: Exile the top three cards of target opponent's library.
[−X]: Put a creature card with mana value X exiled with Ashiok onto the battlefield under your control. That creature is a Nightmare in addition to its other types.
[−10]: Exile all cards from all opponents' hands and graveyards.

Mythic · Theros · #188 (THS)

Illustrated by Karla Ortiz