Satori the Foul

When Satori the Foul enters the battlefield
target opponent reveals their hand. You choose a nonland card from that player's graveyard or
hand and exile it. You may cast that card for as
long as it remains exiled, and you may spend
mana as though it were mana of any color to cast
that spell.
You may look at the top card of opponents'
libraries at any time.
Your thoughts betray you.