Nyarlathotep, Hand of Chaos

Hexproof, Indestructible, Menace
{4}{u}{b}{r}: Nyarlathotep, Hand of Chaos deals 7
damage to target player or planeswalker. That
player or that planeswalker's controller discards
seven cards, then sacrifices seven permanents.
Gain control of target creature until end of turn.
Untap it. It gains haste until end of turn.
Sacrifice it at the beginning of the next end step
if it has converted mana cost 3 or less.