Josh, Boardstate Exploder

Vigilance Cascade, Cascade Whenever Josh attacks, look at the top X cards of your library, where X is Josh’s power. Choose two cards with mana value X or less and exile them. You may cast them without paying their mana cost until end of turn. Then, put each card with mana value X or less not chosen this way into your hand. Put the rest of the cards on the bottom of your library in a random order.{flavor}“And then I’ll cast Unnatural Growth.”