Post
Passive items that stop being trinkets and start becoming engines.
Relic synergies happen when passive items amplify each other into a build identity. The best examples are understandable individually but explosive when the player sees the connection.
Example
Slay the Spire relics like Kunai, Shuriken, and Ornamental Fan reward multi-attack decks. Hades keepsake, boon, and weapon combinations create similar passive identity shifts.
Why it matters
Relic synergies matter because they are the moment a run starts feeling authored by the player instead of handed over by RNG.
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