Trade-Prince, Nakra

If Trade-Prince, Nakra is in the battlefield, you
may help opponents cast noncreature spells.
In return,exile random card from opponent's
library.
You may cast that card as if it was in your hand.
Treat mana of exiled card as colorless.
If exiled card is a land, you may cast it and treat it
like colorless mana.
{2}{t} Target opponent receives a treasure token.
Gain control of random card from their hand.