msem-instigator

Augmented — Whenever you cast a spell from your hand, if you've spent {W}{U}{B}{R}{G} to cast spells this turn, exile cards from the top of your library until you exile a nonland card with mana value less than that spell's mana value. You may cast that card without paying its mana cost. Put the exiled cards not cast this way on the bottom of your library in a random order.