Tim, Prodigal Sorcerer

{t}: Tim deals 1 damage to any target. Flip a coin.
If you win the flip, untap Tim and Tim deals
1 damage to you.
{t}: You may cast an instant or sorcery card from
your hand with mana value 3 or less without
paying it's mana cost. Flip a coin. If you win the
flip, untap Tim and Tim deals 3 damage to you.
"It's a good thing I put that severed thumb
on ice."