Fevered Suspicion

Each opponent exiles cards from the top of
their library until they exile a nonland card.
You may cast any number of spells from
among those nonland cards without paying
their mana costs.
Rebound (If you cast this spell from your hand,
exile it as it resolves. At the beginning of your
next upkeep, you may cast this card from exile
without paying its mana cost.)