Rias Gremory

Whenever a source deals damage to you, deal x damage to that sources controller where x is the amount of damage dealt, then put x rage counters on Rias Gremory.
{u}{b}{r}{t}: Remove x rage counters, transform Rias Gremory.
Whenever a creature dies flip a coin, if you win the flip return it to the battlefield under your control. It becomes a devil in addition to its other types.