At the beginning of each player's upkeep, Power Surge deals X damage to that player, where X is the number of untapped lands they controlled at the beginning of this turn.
Near Mint - $1.20
Lightly Played - $1.10
Played - $0.90
Heavily Played - $0.70
Damaged - $0.60
Near Mint Non-English - $1.20
Lightly Played Non-English - $1.10
Played Non-English - $0.90
Heavily Played Non-English - $0.70
Damaged Non-English - $0.60