Rusty Robo-Kitty

Whenever Rusty Robo-Kitty takes damage, flip a coin. If you win the flip, untap Rusty Robo-Kitty. If you lose the flip, tap it and it deals 2 damage to itself.
Whenever Rusty Robo-Kitty deals combat damage to a player, that player must start a timer. If they don't find a coin before the timer runs out, they lose the game.