Rolos, Tireless Peddler

Imprint —When Rolos enters the battlefield,
exile the top ten cards of your library. Your
opponents can cast cards you own exiled with
Rolos, and can spend mana as though it were
mana of any color to cast them.
Whenever an opponent casts a spell you own,
create a treasure token and draw a card.
{w},{u},{b} or {r}: Rolos gains hexproof until
end of turn.