Orianna, Vexing Hexer

{u}, {t}: Put a hex counter on target creature.
{r}, {t}: Gain control of all creatures with hex counters on them. Untap them. They gain haste until end of turn.
{b}{b}{b}, {t}: Creatures with hex counters get -X/-X until end of turn, where X is the number of creatures with hex counters on them.