Harbinger of Chaos

Flying, haste
{u/r}: Flip a coin. If you win the flip, Harbinger of Chaos gets +X/+X until end of turn, where X is the number of coin flips won this turn.
{6}{u}{r}: Until end of turn, Harbinger of Chaos becomes a 8/8 red Elemental with haste and flying named Chaos Storm and loses all other abilities.