Pernida, the Compulsory

Hexproof, indestructible, flash, reach
Permanents you don't control with counters on them cannot attack, block, or activate abilities.
{2}{w}: Tap target creature.
{x}{u}: Gain control of target creature with converted mana cost x until the beginning of your next upkeep.
{b}{b}: Put a -1/-1 counter on target creature.