Finn, Reckless Sorcerer

Creatures with power less than this creature's power can't block it.

When Finn, Reckless Sorcerer enters or attacks, look at the top four cards of target opponent's library, exile one of them face down, then put the rest on the bottom of that library in a random order. You may cast that card for as long as it remains exiled, and mana of any type can be spent to cast that spell.