Moira, Fiendish Scientist

Ultimate: Coalescence - (Moira, Fiendish Scientist enters the battlefield with X charge counters, where X is your half your life total, rounded down. At the beginning of your upkeep, remove a charge counter, then, when the last is removed, creatures you control are unblockable and gain +X/+0 until the end of turn.)
{w}, {t}: Biotic Orb (Creatures target opponent controls get -0/-2 until the end of turn)
{b}, {t}: Fade (Moira phases out until the end of turn)