Daretti, Aether Thief

Haste
Pay {e}{e}{e}: Look at target opponent's hand. You
may choose a card from among them and exile it.
Until the end of your next turn, you may cast it,
and you may use mana as though it were mana of
any color to cast it.
What wonders does this golden paradise hold for a
thief like me?
- Daretti