Obsidian Fireheart

As of Aug 8, 2026, the cheapest tracked printing of Obsidian Fireheart is $0.63 (E01 #55), and the most expensive is $7.46 (ZEN #140, Foil). The benchmark price (cheapest playable nonfoil) is $0.81, up 1.3% over 7 days, up 26.6% over 30 days, flat over 90 days. All-time tracked high: $0.82 (2026).

Obsidian Fireheart has 2 tracked printings across 2 sets, in nonfoil and foil finishes.

E01 #55

$0.63

CK $1.79 / $0.45 29%

MP $0.41 54 avail

ZEN #140

$0.81 +29%

CK $1.79 / $0.36 56%

MP $0.63 59 avail

ZEN #140 Foil

$7.46 +1084%

CK $7.99 / $4.00 46%

MP $5.34 5 avail

Card Kingdom currently pays $4.00 cash for ZEN #140 (Foil); the retail-buylist spread on that printing is 50% (wide).

• Oct 1, 2009 A land with a blaze counter on it is an illegal target for this ability. You may activate the ability targeting a land, then activate the ability in response to itself targeting the same land. Although the first ability to resolve will put a blaze counter on that land, the second ability to resolve won’t resolve.
• Oct 1, 2009 As the reminder text indicates, whether the targeted land has the triggered ability that’s been granted to it depends only on whether it has a blaze counter on it, not on whether Obsidian Fireheart is still on the battlefield.
• Oct 1, 2009 If a land ends up with more than one blaze counter on it (thanks to Doubling Season or Gilder Bairn, for example), the ability still only causes it to deal 1 damage to its controller each turn.
• Oct 1, 2009 If all blaze counters on a land are moved to a different land, the triggered ability doesn’t follow them. The first land no longer has the ability because it no longer has a blaze counter on it. The second land doesn’t have the ability because Obsidian Fireheart didn’t target it.
• Oct 1, 2009 The ability gained by the land triggers at the beginning of the upkeep of the land’s controller, not the beginning of the upkeep of Obsidian Fireheart’s controller. The player who controls the land at the time the ability triggers is the one who’s dealt damage.

Obsidian Fireheart has been reprinted 3 times.

Set	Date	Rarity	Treatment
E01 #55	2017-06-16	Mythic	Standard
ZEN #140	2009-10-02	Mythic	Standard
ZEN #140	2009-10-02	Mythic	Standard

Obsidian Fireheart is the #16,934 most-played card on EDHREC, down 185 places over the last 30 days.