Power, Maniacal Usurper

As an additional cost to casting this spell, sacrifice any number of creatures. This spell costs {1} less to cast for each creature sacrificed this way.

This spell can’t be countered.

Power, Maniacal Usurper’s power and toughness are each equal to the total power of creatures that died this turn.

At the beginning of your upkeep, flip a coin. If you win the flip, Power deals X damage to each player, where X is the difference between his power and the total
number of players.