Zenyatta

Each turn target creature you control other than
Zenyatta gets +0/+1 until end of turn and target
creature you do not control that has two or more
total toughness gets -0/-1 until end of turn.
{t}{x}: Zenyatta gets Hexproof. Target X
creature(s) get +0/+X until end of turn.
{t}{6}: Zenyatta deals 3 damage to target creature.