Heart of Fire (XIX) value scales inversely with weapon pierce. Single-target weapons like Fire Wand, Long Gun, and Hand Grenade gain massive AOE for free because every hit creates an explosion. Infinite-pierce weapons like Garlic and Pentagram are not on the affected list at all. The arcana also turns Phiera Der Tuphello into a screen-clearing weapon because every one of its many bullets creates an independent explosion. The pierce math is the difference between picking Heart of Fire as a top-3 arcana versus skipping it entirely.
Heart of Fire (XIX) creates explosions on impact for listed weapons (50% of base damage), turns light source destruction into AOE explosions, and triggers retaliatory explosions around the player every 0.5 seconds when damaged. Already-explosive weapons gain +50% explosive damage instead of getting a new explosion. The default base damage of 10 is used for retaliatory and light source explosions when no listed weapon is held.
Per the official Vampire Survivors Wiki, Heart of Fire (XIX) was added in Patch 0.5.0 (12 April 2022). The internal ID T19_FIRE references the Castlevania (1986) Stage 5 theme "Heart of Fire," which was reused as Julius Belmont's theme in Castlevania: Aria of Sorrow. The public spell "ilsole" (Italian for "the sun") maps the arcana to The Sun Major Arcana (XIX), symbolizing joy, vitality, radiance, and good health. The mechanical theme reflects the tarot meaning literally: fire weapons benefit and explosions trigger from the player when struck.
| Effect | Detail |
|---|---|
| Weapon impact explosions | Listed weapons create an explosion on enemy impact, dealing 50% of weapon base damage as AOE |
| Already-explosive weapons | Weapons with built-in explosive effects (Hand Grenade, Multistage Missiles, Hyperion Bazooka) gain +50% explosive damage instead |
| Light source explosions | Destroying any light source on stage triggers an explosion at that location |
| Retaliatory explosions | When the player takes damage, an explosion fires around the character. Maximum once per 0.5 seconds |
| Default damage | If no listed weapon is held, light source and retaliatory explosions deal 10 damage |
| Multiple-weapon scaling | Retaliatory base damage increases by 5 for every listed weapon held, starting from the second weapon |
Roughly 30 weapons across the base game and all DLCs gain the explosion-on-impact bonus. The list includes all fire weapons, Phiera Der Tuphello and its evolutions, the entire Operation Guns weapon set, Belmont and Belnades fire-themed weapons from Ode to Castlevania, and Emergency Meeting punch and missile weapons. Garlic, Pentagram, Bone, Cherry Bomb, and most whip weapons are NOT affected.
| Weapon | Best Synergy | Notes |
|---|---|---|
 Fire Wand | Hellfire evolution | Single-target weapon gains AOE for free; massive value |
 Hellfire (evolved Fire Wand) | Already infinite pierce | Each pierced enemy creates an explosion; chain reaction |
| Phiera Der Tuphello | Phieraggi evolution | Many small bullets = many small explosions; screen-clear potential |
 Red Muscle (Gemini counterpart) | Same as Phiera | Counterpart created by Gemini (I); doubles explosion density |
 Zhar Ptytsia (Vandalier counterpart) | Same as Vandalier | Counterpart from Gemini (I) |
 Aura Blast (Tides DLC) | Kardia Phlegeton | Standalone fire weapon |
Per the official wiki, all 18 Operation Guns weapons are listed. The Heart of Fire affects guns with low pierce particularly well, since Operation Guns weapons rely on linear projectile fire that benefits enormously from added AOE.
| Weapon | Type |
|---|---|
 Ammo Appalate / Horse Cartridge / Gunastrophe | Base + Gemini counterpart + Evolution |
 Long Gun / Prototype A | Base + Evolution |
| Short Gun / Prototype B | Base + Evolution |
 Spread Shot / Prototype C | Base + Evolution |
| Firearm / Fire-L3GS | Base + Evolution |
| Homing Miss / Multistage Missiles | Base + Evolution (already explosive) |
| Vanitas Whip / Aurablaster Tip | Base + Evolution |
| Prismatic Missile / Luminaire | Base + Evolution (already explosive) |
| Weapon | DLC |
|---|---|
 Valkyrie Turner | Tides of the Foscari (She-Moon Eeta hidden) |
| Svarog Statue / Darkness Illusion | Tides of the Foscari |
| Tri-Bracelet / Lapiste Tepisto | Tides of the Foscari |
| Flames of Misspell / Ashes of Muspell | Tides of the Foscari (already explosive base) |
 Raging Fire /  Salamender / Speculo Raging Fire | Ode to Castlevania (Sypha spellbook) |
 Hand Grenade / The RPG | Operation Guns (already explosive) |
| Dies Irae | Ode to Castlevania |
| Punch / Pressure Point / Gilded Hand | Emergency Meeting |
| Saber Machine Gun / Hecaton / Divergence | Emergency Meeting |
| Super Missile / Hydra Cannon / Hyperion Bazooka | Emergency Meeting (already explosive) |
| Spirit Rings / Rings of Calamity | Emergency Meeting |
Explosion damage = 50% of weapon base damage. Already-explosive weapons get +50% explosive damage instead. Default light source and retaliatory damage = 10 (when no listed weapon is held). Retaliatory base damage increases by +5 per listed weapon starting from the second. Might and Area scale all explosions; Armor adds +10% additive to retaliatory damage per point.
| Weapon | Base Damage | Explosion Damage |
|---|---|---|
| Fire Wand | 10 | 5 per hit |
| Phiera Der Tuphello | 5 | 2.5 per hit (many bullets) |
| Hellfire | 25 | 12.5 per pierced enemy |
| Hand Grenade (already explosive) | N/A | +50% to existing explosive damage |
| Valkyrie Turner | Charge-dependent | Uses base damage, NOT charge bonus |
VSDirect answer: No-pierce weapons gain MORE relative value; infinite-pierce weapons gain MORE absolute damage.
A no-pierce weapon like Fire Wand normally hits one enemy and stops. With Heart of Fire, that one hit creates an explosion that damages every enemy nearby. The arcana converts a single-target weapon into AOE. An infinite-pierce weapon like Hellfire already hits every enemy in its path, so the explosions add MORE damage on top of existing AOE. Per the official wiki tip, weapons with low or no pierce benefit massively because Heart of Fire transforms their crowd damage output. Choose Fire Wand for the conversion benefit; choose Hellfire for the multiplier benefit.
Reach character level 50 with Arca Ladonna in any single run. Arca is a base game character unlocked by reaching minute 10 in Mad Forest with Imelda. Spell shortcut: type ilsole in the Forbidden Scrolls of Morbane Secrets menu (does NOT trigger achievement).
| Step | Action |
|---|---|
| 1 | Unlock Arca Ladonna by reaching minute 10 in Mad Forest with Imelda Belpaese |
| 2 | Take Arca to Inlaid Library or Cappella Magna with Curse stacked for fast XP gain |
| 3 | Equip Crown, Stone Mask, and Skull O Maniac for Growth and Curse compounding |
| 4 | Pick Beginning (X) arcana for +1 Amount on Songs of Mana, +3 on her main weapon |
| 5 | Push to level 50 (typically reached around 18:00 to 22:00 with optimal Growth scaling) |
| 6 | Once level 50 fires, Heart of Fire (XIX) unlocks immediately |
Three competitive carry options. Avatar Infernas (baked-in arcana, Songs of Mana starter) for low-effort runs. Phiera Der Tuphello / Phieraggi for explosion density. Hand Grenade / The RPG for already-explosive scaling on Operation Guns characters.
| Slot | Item |
|---|---|
| Character | Avatar Infernas (Heart of Fire baked-in) |
| Stage | Mad Forest or Cappella Magna for high item density |
| Arcana 1 | Mad Groove (VIII) at 11:00 for stage item pulling |
| Arcana 2 | Divine Bloodline (IX) at 21:00 for Max Health on retaliatory kills |
| Weapons | Songs of Mana (Avatar starter), Fire Wand into Hellfire, Phiera Der Tuphello into Phieraggi |
| Slot | Item |
|---|---|
| Character |  Julius Belmont (Heart of Fire baked-in, Ode to Castlevania DLC) |
| Stage | Cappella Magna for boss density |
| Arcana 1 | Beginning (X) for +1 Amount across all weapons |
| Arcana 2 | Heart of Fire (XIX) double-stacked or Sarabande of Healing (VI) |
| Weapons | Vampire Killer (Julius starter), Fire Wand, Hand Grenade, Multistage Missiles |
Top synergies: 
Mad Groove (VIII) for centralized enemy density that compounds explosions, 
Divine Bloodline (IX) for +0.5 Max Health per retaliatory kill, 
Hail from the Future (X) for Nduja Fritta drops boosted 4x by Heart of Fire.
| Arcana | Why It Works |
|---|---|
| Mad Groove (VIII) | Pulls all stage items (including light sources) toward player; light source explosions concentrate around character on every pulse |
| Divine Bloodline (IX) | +0.5 Max Health when enemies die to Heart of Fire retaliatory damage; compounds with damage taken |
| Hail from the Future (X) | Per the wiki, Nduja Fritta Tanto drop weight is multiplied by 4 with Heart of Fire active; Hail of the Future also drops Nduja |
 Heir of Fate (XIX) Darkana | Counterpart Darkana; fire kills drop Scorched Souls for stat scaling alongside explosions |
| Character | Why It Works |
|---|---|
| Avatar Infernas | Heart of Fire baked-in; persists on arcana-disabled stages |
| Julius Belmont (Ode DLC) | Heart of Fire baked-in; thematically tied via the Aria of Sorrow soundtrack reference |
 Dario Bossi (Ode DLC) | Per the wiki, Dario Bossi's ability boosts ALL explosions, making this a critical arcana for his build |
| Arca Ladonna | Songs of Mana starter; the unlock character also benefits from the arcana she unlocks |
Nduja Fritta Tanto drop weight is multiplied by 4 from light sources and Hail from the Future when Heart of Fire is active. The Nduja food item triggers fire damage that counts as a Heart of Fire weapon, so picking it up and using it during the run further amplifies the build.Players new to Heart of Fire run into these recurring problems:
Heart of Fire (XIX) is named after the Stage 5 theme from the original Castlevania (1986). The track was reused as Julius Belmont's theme in Castlevania: Aria of Sorrow, which is why Julius starts with this arcana baked-in. The spell ilsole means 'the sun' in Italian, referencing The Sun Major Arcana card (XIX), symbolizing joy, vitality, radiance, and good health.
Per the official Vampire Survivors Wiki, Heart of Fire (XIX) creates explosions on impact for listed weapons (50% of base damage), turns light source destruction into AOE explosions, and triggers retaliatory explosions around the player every 0.5 seconds when damaged. Already-explosive weapons gain +50% explosive damage instead. The default damage of 10 applies to retaliatory and light source explosions when no listed weapon is held. Released in Patch 0.5.0 (April 12, 2022).
Reach character level 50 with Arca Ladonna in any single run. Arca is a base game character unlocked by reaching minute 10 in Mad Forest with Imelda Belpaese. Spell shortcut: type ilsole in the Forbidden Scrolls of Morbane Secrets menu. Per the standard Vampire Survivors spell shortcut rule, ilsole does NOT trigger the corresponding achievement. Players chasing in-game completion still need the manual level 50 unlock.
Roughly 30 weapons across the base game and all DLCs. Base game: Fire Wand, Hellfire, Phiera Der Tuphello, Red Muscle, Zhar Ptytsia. Tides DLC: Aura Blast, Kardia Phlegeton, Valkyrie Turner, Svarog Statue, Darkness Illusion, Tri-Bracelet, Lapiste Tepisto, Flames of Misspell, Ashes of Muspell. Operation Guns: Ammo Appalate, Long Gun, Short Gun, Spread Shot, Firearm, Homing Miss, Vanitas Whip, Prismatic Missile, Hand Grenade, plus all evolutions. Ode: Raging Fire, Salamender, Speculo Raging Fire, Dies Irae. Emergency Meeting: Punch, Pressure Point, Saber Machine Gun, Super Missile, Spirit Rings, plus evolutions.
No. Garlic, Pentagram, Bone, Cherry Bomb, Magic Wand, King Bible, and most whip weapons are NOT on the affected list. The arcana only works for the specific weapons listed in the wiki Overview section. Players running Garlic-centric or Pentagram-centric builds gain only the light source explosion and retaliatory explosion benefits, not the per-hit weapon explosions.
When the player takes damage, Heart of Fire creates an explosion around the character. The explosion can fire at most once per 0.5 seconds. Per the wiki, the base retaliatory damage is 10 (default) and increases by +5 for every listed weapon held starting from the second. Might, Area, and Armor all increase retaliatory damage; Armor adds +10% additively per point.
Yes. Avatar Infernas (secret base game character, unlocked through Inverse mode chain) and Julius Belmont (Ode to Castlevania DLC) both start with Heart of Fire (XIX) baked-in. The arcana persists even on stages with arcanas disabled, making both characters strong choices for any build that depends on AOE damage. The Julius Belmont reference ties to the Aria of Sorrow soundtrack origin of the arcana name.
Per the wiki, light source and retaliatory explosions use the FIRST listed weapon's base damage as the source. Phiera Der Tuphello has a base damage of 5, which is half the default 10. The math means Phiera-based light source explosions deal 2.5 damage instead of 5. However, the wiki specifically notes that 'this bonus will be overridden by other weapons' if a higher-base weapon is also held. Practically, Phiera-only builds see double the light source explosion frequency due to the high projectile count, even if individual explosions are smaller.
Yes if the build centers on listed weapons. Heart of Fire scales linearly with weapon hit count, so Phieraggi, Hellfire, and Operation Guns weapons benefit enormously over long runs. Compare with our Curse stat guide for compounding density math. The +50% explosion damage compounds with Curse-driven enemy density. Skip the arcana on Garlic, Pentagram, or whip-centric builds since the carry weapon does not benefit.
Heart of Fire mechanics, complete affected weapons list, retaliatory damage scaling math, Arca Ladonna unlock chain, and Castlevania music references cross-referenced against the official Vampire Survivors Wiki on Weirdgloop and the Vampire Survivors Fandom Wiki, including Patch 0.5.0 release notes that introduced Heart of Fire and subsequent patch notes for DLC weapon additions. In our experience, the wiki Heart of Fire (XIX) page is the definitive single reference for the explosion damage formula and the affected weapon list.
Sprite assets and stat data derived from the Vampire Survivors Wiki, hosted by Weirdgloop and licensed under CC BY-NC-SA 3.0. Vampire Survivors is a trademark of poncle. This guide is an independent reference and is not affiliated with poncle.