Chaos Clown

Chaos Clown cannot block, be sacrificed, destroyed, targeted, removed from the battlefield, or deal damage.
Spells with mana value 4 or greater cannot be cast. Instead, throw the card as high as possible into the air, and if it lands face up, it's cast it for free. If it doesn't, you get to cast it for free instead. (Any X cost will be 0)
{1}: Swap your sideboard with your library.
“I Scream, You Scream, We All Scream… In The Terrible Housefire At The Family Reunion.”