Mithex, Reincarnation Designer

Indestructible, Annihilator 2
When you cast Mithex Reincarnation Designer,
place the top card from your curse deck onto the
battlefield under the control of target player.
Opponents can't sacrifice curses.
When any permanent leaves the battlefield, you
may create a token copy of target curse and
place it under the control of that permanent's
owner.
Do not mourn, poor mortal. You will be of great use.