Ner'Zhul, The First Lich King

Deathtouch, Lifelink

{3}{t},Gain control of target creature, only use
this ability once per turn.

If this card deals damage to an opponent, that opponent discards 1 card.

"They have served their purpose, from this point on all that we gain will be ours alone"- Anciten shaman Ner'Zhul