The Arcana system is the central progression mechanic in Castlevania: Belmont's Curse and is themed around a 22-card Major Arcana tarot deck. The published framing is that 'the bosses are not trophies, they are passengers' — every boss you defeat is sealed into a tarot card, travels alongside Rose as a companion, and unlocks both a Spell and a Special Action. A separate Blessings layer sits on top of each card, and a Gift bonus unlocks when the card is slotted into your equipment.
More context
Use Arcana to carry the raw damage in mid and late game; pair each card with Works of Mercy (up to 3 per card) to unlock Blessings, and slot the card to gain its Gift.
On this page
What 'sealed boss' actually means
When a boss is defeated, that boss is sealed into Rose's tarot cards and becomes an Arcana. The sealed personality bleeds through to party dialogue:
- The Fallen reveals he was being mind-controlled and becomes cooperative.
- Joan of Arc is straightforwardly helpful once freed, and her Special Action (a holy-light halo) doubles as a parry and a way to pass through certain walls and floors.
- Medusa stays hostile and claims she can see a future where Rose fails.
Confirmed sealed bosses in the system so far include The Fallen, Joan of Arc, Death, Medusa, Isaac, and Carmilla. The full 22-card deck is built up over the run, with classic Metroidvania gating: the order in which you challenge bosses changes your build and which paths open up first.
What each Arcana card gives you
| Layer | Kind | Examples from previews |
|---|---|---|
Spell | Active magical attack cast with MP | Cursed Flame (30 MP, Paris Streets starting spell) · Holy Cross (50 MP, granted after The Fallen) |
Special Action | Non-spell ability, often tied to traversal or combat | Joan of Arc's holy-light halo (parry and pass through certain walls and floors) |
Works of Mercy | Task-based objectives, up to 3 per card | Cursed Flame's first: 'Hit an enemy five times with its spell.' |
Blessings | Arcana-specific strengthening of the card's effect | Cursed Flame Blessing makes the fireball larger and increases its pushback. |
Gift | Slot-conditional bonus when the card is equipped | Unlocks when the Arcana is slotted into your equipment. |
What Arcana Blessings actually do
The Blessings layer is a separate upgrade system that lives inside each Arcana. Each Arcana has up to 3 task-based objectives called Works of Mercy. Completing a Work of Mercy unlocks a Blessing, which is an Arcana-specific strengthening of that card's effect.
Example from previews: Cursed Flame's first Work of Mercy is 'Hit an enemy five times with its spell.' Completing it unlocks the Cursed Flame Blessing, which makes the fireball larger and increases its pushback. The pattern is the same for every card: complete the Works of Mercy, the corresponding Blessing upgrades that card's specific effect.
How Relics fit (and don't fit) the Arcana system
Relics are a separate layer from Arcana. They are equippable accessories (referred to as 魔導器 / Magical Conductors in the Japanese marketing) that provide offensive and defensive modifiers, with up to 3 Relics equippable at once. Most Relics deliver numerical boosts (such as break damage or air damage) rather than new mechanics; only a few 'effect-distinct' Relics truly change playstyle. Combining Relics with weapons defines a custom build, and the Midnight Edition ships bonus in-game Relics.
In short: Arcana carries most of the raw damage in mid and late game, while weapons and Relics mainly shape how that damage is delivered.
An example chain in practice
Rose begins with Cursed Flame (Spell) in the Paris Streets
Starting spell from the Paris Streets opening chain.
Done when: Cursed Flame is in your active slots.
Defeat The Fallen in the sewers
Unlocks Holy Cross (Spell) and the corresponding Special Action.
Done when: Holy Cross is unlocked and slot-eligible.
Use Holy Cross to unlock the gate to the Catacombs
Traversal layer of the same card opens the next region.
Done when: Catacombs gate opens.
Defeat Medusa and Death in the Catacombs
Add their cards to the deck.
Done when: Medusa and Death cards acquired.
Continue through Dracula's Castle
Seal Isaac, Carmilla, and the late-game roster.
Done when: Castle sealings complete.