Sokal, Scribe of Amphirius

Whenever you cast a spell, if you spent
mana of a single color to cast it, you may
have target creature get +3/+3 until end of
turn. If you do, draw a card.
{u}{b}{g}: Until end of turn, you may cast
target spell from your graveyard for its converted mana cost. If you do, exile
it after it resolves.