Aaron

When this creature enters or attacks, create a 1/1 red Dinosaur creature token named "Baby Spinosaurus" with "When this creature enters, exile the top card of each players library, then you may cast a spell from among those cards without paying its mana cost."

Whenever this creature dies, each player exiles cards from the top of their library until they exile a nonland card. You may cast any number of spells from among the nonland cards exiled this way without paying their mana costs.