Chaos Arisen

Whenever a permanent leaves the battlefield,
that permanents owner shuffles it into their
library, then exiles cards from the top of their
library until they exile a card that shares a card
type with it. That player may cast that card
without paying its mana cost. Then they put all
cards exiled with Chaos Arisen on the bottom
of their library in a random order.
To be. Or to see.