Undercity Sewers (Borderless) (20) (PZA)
Non-Foil - NM
Not Buying
![Obsidian Fireheart [Zendikar]](https://cdn.shopify.com/s/files/1/0267/9501/6251/products/2a45888e-639b-55cd-9751-40fd1adc3996.jpg?v=1700205570)
Obsidian Fireheart [Zendikar]
| Set: | Zendikar |
| Type: | Creature — Elemental |
| Rarity: | Mythic |
| Cost: | 1RRR |
| Colors: | R |
{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.)