Xarth, the Blade of Justice

Vigilance, First Strike, Flying
{r}: Flip a coin. If you win the flip, draw two
cards. If you lose the flip, deal 4 damage to a
creature.
{w}{r}: Flip a coin. If you win, all creatures you
control gain +5/+5 until end of turn. If you fail,
exile all creatures you control. Return those
cards to the Battlefield, at the beginning of the
next end step.