Ebony Maw

Ebony Maw can't be countered.
If an opponent controls a Doctor Strange
creature, Ebony Maw gains hexproof.
{t}{1}{u}{r}: Counter target spell. Ebony Maw deals
1 damage to its controller.
{t}{u}{x}: Gain control of target creature with
converted mana cost X for as long as you
control Ebony Maw.