{1}{R}{R}: Put a blaze counter on target land without a blaze counter on it. For as long as that land has a blaze counter on it, it has "At the beginning of your upkeep, this land deals 1 damage to you." (The land continues to burn after Obsidian Fireheart has left the battlefield.)
NM-Mint - $1.00
Lightly Played - $0.90
Moderately Played - $0.80
Heavily Played - $0.70
Damaged - $0.50
NM-Mint Non English - $1.00
Lightly Played Non English - $0.90
Moderately Played Non English - $0.80
Heavily Played Non English - $0.70
Damaged Non English - $0.50
Foil Prices
NM-Mint Foil - $7.20
Lightly Played Foil - $6.50
Moderately Played Foil - $5.80
Heavily Played Foil - $5.10
Damaged Foil - $3.60
NM-Mint Foil Non English - $7.20
Lightly Played Foil Non English - $6.50
Moderately Played Foil Non English - $5.80
Heavily Played Foil Non English - $5.10
Damaged Foil Non English - $3.60