Chaos Clown

Opponents cannot be dealt damage by you or deal damage to you. (Spells or permanents)
Chaos Clown cannot be removed from the battlefield, attack, block, or targeted.
Spells with mana value 3 or greater are cast for free, but whenever they are, throw the card as high as possible into the air. If it landed face up, cast it for free. If it landed face down, it isn't cast, then it's put into their sideboard.
{1}: Put a card you don't own from a sideboard
on top of your library.