Violet, The Spell Slinger.

Partners with: Void the Tank. Or partners a legendary creature
with only red, only blue or only both red and blue.
pay {r} & {x}: Find a spell card from your
graveyard or exile with {x} = mana cost of the spell.
If its {r} cast it as split-second.
If its {u} make a copy and cast it target the same or
a different target.
pay: {u}&{t} draw a card or scry 2 cards.