Luxuria, 7th Pit Lord

Flying, haste

Lust — Sacrifice a creature, {t}: Gain control of target creature until Luxuria, 7th Pit Lord leaves
the battlefield. That creature can't be sacrified, and
can’t attack or block unless Luxuria, 7th Pit Lord attacks or blocks.

When Luxuria, 7th Pit Lord leaves the battlefield, you lose 7 life for each creature you lose control of.