Taysir of Rabiah

Whenever you cast another spell, if
{w} was spent to cast it, exile target
creature and its controller gains life equal
to its toughness. If {u} was spent, draw a
card. If {b} was spent, each opponent
discards a card. If {r} was spent, Taysir of
Rabiah deals 2 damage to target creature
or player. If {g} was spent, you gain 4
life.