Relics

Passive permanent effects for the run. You start with 1 (character-specific starter) and accumulate ~10–20 by the end of a successful run.

The Council of Ghosts event — a textbook bonus-with-drawback choice: gain 5 Apparition (a powerful run-defining buff) at the cost of 50% max HP. Most game-warping rewards in Spire pair upside with real cost. Source: Steam.

Where relics come from

Source	Guaranteed?
Elites	✅ every elite
Treasure rooms	✅
Bosses	✅ choice of 3
Shops	purchasable
Events	sometimes
Acts 3 & 4 transitions	special

Rarities

• Common / Uncommon / Rare / Boss / Special / Shop tiers.
• Default odds: ~50% / 33% / 17% (Common / Uncommon / Rare). Chests skew differently.
• Each character has its own relic pool plus a shared pool. Some relics only drop for one character.

Why relics are the deepest design lever

Relics fundamentally break rules. A few examples:

Relic	Effect
Snecko Eye	All card costs are randomized 0–3 each time you draw them, and you draw +2 cards per turn
Runic Pyramid	Never discard your hand at end of turn
Velvet Choker	You can only play 6 cards per turn, but you start with +1 energy
Calling Bell	Gain a curse, gain 3 specific relics
Ectoplasm	+1 energy, you can't gain gold
Coffee Dripper	+1 energy, you can no longer Rest
Sozu	+1 energy, can no longer get potions
Pandora's Box	Transform every Strike and Defend in your deck

Each relic is a small modifier that turns a normal run into a specific puzzle. Combined with deck composition, relics produce hundreds of distinct "this run is about X" identities. Snecko Eye + Runic Pyramid is a wildly different game from Velvet Choker + Calling Bell.

See rule-breaking-relics.

Boss relics — the highest-stakes choice

After each act boss, pick 1 of 3 boss relics. These are the most game-warping options in the game. Most have a real drawback alongside a powerful bonus:

• Pandora's Box → transform every Strike and Defend.
• Sozu → +1 energy / no potions.
• Coffee Dripper → +1 energy / no Rest.
• Black Star → Elites drop a powerful Boss-tier relic / common-tier act 1 relic gone.

The drawback is the design point. Boss relics force you to commit to a strategy direction. They make the run "about" something — and they prevent you from picking up the most-broken option without a real cost.

See bonus-with-drawback.

What this teaches

If your game has run-defining loot, give it costs. Uncosted upgrades flatten variety because every "great" run has the same shape. Costed upgrades create distinct "this is what the run is about" identities — and force the player to commit to a path rather than collect everything.

Patterns this exemplifies

• rule-breaking-relics
• bonus-with-drawback