Format Legality
Pre-release Legal
Tiny Leaders Legal
Custom Legal
Magic Duels Legal
Canadian Highlander Legal
Vintage Legal
Oathbreaker Legal
Modern Legal
Arena Legal
Penny Dreadful Legal
Standard Legal
Pauper EDH Legal
Leviathan Legal
Legacy Legal
Brawl Legal
1v1 Commander Legal
Duel Commander Legal
Casual Legal
Unformat Legal
Pauper Legal
Commander / EDH Legal

Printings View all

Set Rarity
War of the Spark (WAR) Common

Combos Browse all



As an additional cost to cast this spell, sacrifice a creature or planeswalker.

Heartfire deals 4 damage to target creature, player or planeswalker.

Browse Alters

Heartfire Discussion

pistolpeteiii on Mono-Red Aggro: Throne of Eldraine

5 days ago


Dwarven Mine has actually come in clutch in a few games for me. Its an ok land to play on turn 1/2 if you don't have anything else to play, as you would just waste the turn with an untapped mountain anyways. The 1/1 body in addition to a Torbran, Thane of Red Fell on turn 4 is basically game over if they can't answer in time, as it presents 7 damage with just those 2 cards. They add to the Mountain sub-type requirement, making it less detrimental if more than 1 copy is drawn in a game. Its also a small way you can keep up pressure if you are over-drawing on lands, especially with a Cavalcade of Calamity on the field, or by providing fodder for Heartfire .

I intend to keep it in the list for these reasons, however I encourage you to play the deck how you like! Thanks for checking it out.

StopShot on Mardu Knights Standard

1 week ago

I don’t play standard, but your deck seems too heavy on creatures and lacking in non-creature spells such as spot-removal.

Claim the Firstborn seems really good as you can remove a blocker for cheap and have it deal damage. If you’re up against a deck with not a lot of creatures you can still use it to give your own creature haste or to untap it as a blocker after combat.

Your deck should also be running Corpse Knight as it would be ridiculously strong with Worthy Knight . Skyknight Vanguard would also help a lot in pushing this synergy as well. You could then abuse cards like Heartfire and Spark Harvest which are tremendously strong if you can flood the field. Do keep in mind those two spells work amazing with Claim the Firstborn as you can sac your own opponent’s stuff instead.

Promotheus on Priest of Mayhem!

2 weeks ago

Hey, i play a mardu version of this Deck (mostly because of Cruel Celebrant ) but i reccomend Chandra, Acolyte of Flame and Heartfire and maybe Judith, the Scourge Diva , i would take out Mask of immolation and the instant that gives deathtouch,forgot it's name, because that isn't really synergistic.

UndeadxPenguins on Mardu Aristocrats

2 months ago

I have my own build of Mardu Aristocrats & I am very impressed with it. It has a likelyhood of beating every popular deck in the meta. I would recommend taking out Elenda, the Dusk Rose , Midnight Reaper , Teysa Karlov , 2 Dreadhorde Butcher , & putting in a fully playset of Priest of Forgotten Gods & Hero of Precinct One . I would also recommend taking out Gutterbones & replacing him with Reassembling Skeleton since he combos off so much better & costs 1 less total mana overall to bring him back. Would also recommend Heartfire since it can win the game on the spot, as well as Liliana, Dreadhorde General . She is a win condition. I'd also recommend putting in a playset of Pitiless Pontiff since she is a fantastic sac outlet. A one of for the Split card Revival / Revenge is good too. Just some suggestions.

Mullac on Heroic Aristocrats [Sideboard help needed]

4 months ago

I think the Priest of the Forgotten Gods should be in the mainboard as an Aristocrat deck as another sac outlet. Instead of Midnight Reaper which may harm you more against other aggro decks (White Weenie, Burn, etc) you can add in Rix Maadi Reveler which can give you a potentially bigger advantage, once you've emptied your hand. It's also definately worthwhile having some exile in your sideboard against Planeswalkers or Rekindling Phoenix . Cards such as Prison Realm , Bedevil or Lava Coil can help you against more Midrange decks (While Heartfire is an interesting choice which could work).

malevolentanus on Undying Burn

4 months ago

With the new War of The Spark set I think I found some options that makes this deck better. -1 Flayer of the Hatebound even though I only made this deck because of this card. I realize it's not a very good card due it's mana cost. Hurt my feelings but I still kept 1 for fringe top end plays. -2 Butcher Ghoul I needed room for +3 Dreadhorde Butcher I feel as if this card is better in pretty much every way accept for eating removal. It will help apply pressure faster and can be used as removal itself. -4 Fling +4 Heartfire this card will be better than Fling in every situation except for use on a 5 power Flayer of the Hatebound so I swapped them.

geoffreyh2oman on Mardu Control

5 months ago

I would wonder if Teysa is doing enough for you in this deck; maybe Heartfire would be a stronger inclusion with Dreadhorde Butcher since it's more active (you cast it) vs. reactive (wait for Teysa to be on the board and DB to die). My two cents—I have a Rakdos sacrifice aggro deck that's been using that to great effect. Plus it's good any-target removal you can use with Dreadhorde Invasion too. I really like your control avenues!

Brainpolice2 on Cruel Aristocracy (WAR)

5 months ago

I originally had Heartfire in the deck actually, and it isn't a bad choice really, but I ended up bumping it out in favor of more Spark Harvest . It isn't too slow per se but it is less efficient strictly for removal purposes. If I wasn't juggling with so many other things I would have kept it in.

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