The Lessor, Fair Magician

{w}: Target spell you don't control can't be
countered this turn.
{u}{t}: Target non-land permanent loses all
abilities and becomes an indestructible flying
creature with power and toughness equal to
its mana value until end of turn.
{r}{t}: You and up to one opponent exile
the top card of their library. Each player who
exiles a card this way, may cast that card until
end of their next turn.