Ino, Mental Mistress

Hexproof
{2}{w/u}{w/u}, {t}: Gain control of target creature as
long as you control Ino, Mental Mistress.
As long as you control a creature you don't own,
Ino, Mental Mistress loses hexproof and doesn't
untap during your untap step.

"Beautiful flowers have thorns too."
—Ino Yamanaka