Orisa, Omnic Guardian

Ultimate: Supercharger - (Orisa, Omnic Guardian enters the battlefield with three charge counters on her. At the beginning of your upkeep, remove a charge counter, then, when the last is removed, creatures you control get +X/+Y until the end of turn, where X is their power and Y is their toughness, then place three charge counters on Orisa.)
{g}{w}: Fortify (Orisa gets +0/+3 until the end of turn, activate this ability only once per turn.)