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