๐Ÿ’Ž Best Relic Combos & Synergies: Beyond Individual Rankings

๐Ÿ“… Updated Jun 3, 2026 ยท โฑ๏ธ 14 min read ยท ๐Ÿท๏ธ Synergy Guide v0.106.1

Individual relic tier lists miss the real power of STS2 โ€” relic combinations. Some relics are B-tier alone but S-tier together. Dead Branch + Corruption isn't two relics; it's a new win condition. This guide maps the 20 most impactful relic synergies in the current meta.

Top 10 Game-Breaking Relic Combos

1. Dead Branch + Corruption (Ironclad) โ€” S++

How it works: Corruption makes skills cost 0 and Exhaust. Dead Branch generates a random card whenever a card exhausts. Every skill you play = 0 energy + random card. Infinite value engine.
Win rate impact: Finding both jumps Ironclad A10 WR from ~31% to ~65%. It's that strong.
How to draft: Take Corruption first. Dead Branch second. Don't take Dead Branch without exhaust โ€” it's C-tier alone.

2. Mummified Hand + Creative AI (Defect) โ€” S++

How it works: Creative AI generates a random Power each turn. Mummified Hand makes the next Power cost 0 after playing one. Every Power you play โ†’ next Power is free โ†’ infinite Power scaling.
Win rate impact: Solves Defect's scaling problem. Frost trivializes, Lightning kills everything.

3. Tingsha + Tough Bandages (Silent) โ€” S+

How it works: Tingsha deals 3 damage when you discard. Tough Bandages gives 3 Block when you discard. In Sly Discard builds, every discard = 3 dmg + 3 block.
Synergy rating: Transforms Calculated Gamble from "draw 7" to "deal 21 damage + gain 21 block."

4. Kunai + Shuriken (Silent) โ€” S+

How it works: Kunai: +1 Dexterity per 3 attacks. Shuriken: +1 Strength per 3 attacks. Shiv builds trigger both simultaneously.
Synergy rating: 3 shivs = +1 Dex +1 Str. By turn 3, you're a tank with 50+ damage turns.

5. Incense Burner + Fossilized Helix โ€” S

How it works: Incense Burner gives Intangible every 6 turns. Fossilized Helix gives Buffer on turn 1. Together, you have 2 turns of invincibility and can align Burner procs with boss attack patterns.
Best on: Any character. Universal defensive core.

6. Du-Vu Doll + Darkstone Periapt (Ironclad) โ€” S

How it works: Du-Vu Doll: +1 Strength per Curse in deck. Darkstone Periapt: +6 Max HP per Curse. Curses become buffs. Take every curse event.
Build-around: Works with Calling Bell boss relic for instant +3 Strength + 18 Max HP.

7. Snecko Eye + Corruption (Ironclad) โ€” S

Risk: Snecko randomizes costs. But with Corruption (skills cost 0 regardless), you ignore cost randomization for the entire skill pool. High-roll the attack costs, get skills for free.
Caveat: Snecko is a double-edged relic. Only combine with Corruption or significant card draw.

8. Bottled Tornado + Echo Form (Defect) โ€” S

How it works: Bottled Tornado puts a Power in your opening hand. Echo Form is bottled = guaranteed turn-2 double-everything.

9. Paper Krane + Malaise (Silent) โ€” S

How it works: Paper Krane: Weak reduces damage by 50% (instead of 25%). Malaise applies X Weak. X=4 โ†’ enemy deals 75% less damage for 4 turns.

10. Strange Spoon + Apparition โ€” S

How it works: Strange Spoon: 50% chance to not exhaust. Apparition: 3(5) copies of Intangible. With spoon, you can have 6+ Intangible turns instead of 3.
Risk: If you don't find Apparition event, Strange Spoon is D-tier.

Per-Character Relic Synergy Matrix

CharacterCore RelicBest Pairings
IroncladCorruptionDead Branch
Feel No PainCharon's Ashes
BrimstoneReaper + Magic Flower
BarricadeCalipers
SilentTough BandagesTingsha
KunaiShuriken
Wrist BladeMutagenic Strength
DefectMummified HandCreative AI
Data DiskInserter
Runic CapacitorEmotion Chip
NecrobinderDead BranchCorruption (from Prismatic Shard)
Bottled FlameGrave Titan (guaranteed opener)
RegentAncient ScepterSealed Throne
PocketwatchRoyal Signet (draw + Star gen)

Trap Synergies โ€” Looks Good, Actually Bad

ComboWhy It's a Trap
Snecko Eye + Runic PyramidHigh-cost cards get stuck in hand forever. Your hand fills with 3-cost Strikes you can never play.
Velvet Choker + Shiv buildChoker caps at 6 cards/turn. Shiv build plays 10+. Instantly kills the archetype.
Sozu + AlchemizeSozu disables potion use. Alchemize generates potions. Anti-synergy.
Ectoplasm + Old CoinOld Coin gives 300g. Ectoplasm prevents gold gain for future floors. Wastes the relic slot.
๐ŸŽฏ Key Takeaway: Relic tier lists rate relics in isolation, but the game is played with combinations. A B-tier relic that completes a synergy jumps to S-tier. Draft relics for your existing build, not for a theoretical perfect deck. The best relic combos (Dead Branch + Corruption, Mummified Hand + Creative AI) define entire runs.