{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.)
Near Mint - $1.200
Lightly Played - $1.000
Moderately Played - $900
Heavily Played - $800
Damaged - $600
Near Mint Spanish - $1.200
Lightly Played Spanish - $1.000
Moderately Played Spanish - $900
Heavily Played Spanish - $800
Damaged Spanish - $600