Endira, Kazmagar's Acolyte

Enthrall (Whenever a creature an opponent controls would die, if it was dealt damage by a source you control with enthrall this turn,
instead you may put a thrall counter on that creature and gain control of it. For as long as that creature has a thrall counter on it, it can't attack or block and it loses all abilities.)
"The son of Bolas will rule all."