Corkscrew, Unstable Inventor

At the begining of your upkeep, flip a coin. If its heads, create a 1/1 thopter artifact creature with flying. If its tails, you lose 2 life.
{t}: Sacrifice an artifact creature you control:
Deal 2 damage to target creature or player.
{t}: Discard a card: Draw a card.
Most of the time I don't even know what
I'm building!