Decimation Carp

This spell can't be countered.
Indestructible, hexproof
Will of the Players - Starting with you, each player may pay any amount of mana. Whoever pays the most wins the game. Decimation Carp's power and toughness is equal to X where X is the total amount of mana payed this way.
This game is over, I need to go home.
-Every Magic Player Ever