Misstaken, Blend Master

Hexproof

When Misstaken, Blend Master enters the battlefield, shuffle {x} cards into your library, where X is the amount of mana spent to cast it, draw a card.
Whenever you cast an instant or sorcery spell, exile the top card of your library. You may play it this turn. If it's a land, put it onto the battlefield tapped instead.
Instants and sorceries you control have flashback. The flashback cost is equal to its mana cost plus {1}.

"Turning chaos into harmony, one beat at a time."