These combos can loop indefinitely once assembled, producing unlimited damage or card plays in a single turn. They require specific deck conditions but end fights instantly when online.
Silent Sly Discard (highest damage ceiling): (1 energy, discard hand and redraw) triggers all Sly cards to play for free. With (1 energy, draw 4), cheap discard tools, and the Schemer enchantment that gives all Skills the Sly keyword, every discard cycle plays your entire hand for free. Community reports describe drawing tens of thousands of cards per turn with zero energy cost.
Necrobinder Haunt + Soul Chain: Two copies of (1 energy Power, each deals 6 unblockable damage per Soul played) plus Soul generation cards (0 energy, draw 2). With a deck of 15–20 cards, Souls cycle fast enough to chain infinite draws while Haunt deals passive damage each time. No energy required once Haunts are in play.
Ironclad Vulnerable loop turns are still possible when cheap Vulnerable sources such as , , and meet a tiny deck and efficient low-cost attacks. The exact loop pieces are less stable in the current STS2 card pool than older STS1-style writeups suggest.
Flash of Steel Doubles: Two copies of (0 energy, 3 damage, draw 1 card) in a small deck loop infinitely because each copy draws the other. Adding extra copies of Flash of Steel or combining with extends the loop. Outputs 3 damage per cycle with unlimited repetitions.
Silent + Necrobinder Co-op: A cross-character combo discovered in the first week that combines Sly infinite plays with Doom execution. Flagged as potentially broken and likely to be patched.
Ironclad combos focus on Strength multiplication and free card plays. The character's strongest lines come from stacking Strength, then hitting with multi-hit or scaling attacks.
Anger + Headbutt Loop: (0 energy, 6 damage, adds a copy to your discard) self-duplicates every play. (1 energy, 9 damage, puts a card from discard on top of draw pile) retrieves the Anger copies. In a 15-card deck, this produces 5–10 Anger plays per turn for zero energy.
Hellraiser + Pommel Strike: (Power, 1 energy, whenever you play a Strike card gain 1 energy) turns every Strike into a free play. (1 energy, 9 damage, draw 1) chains into more Strikes. With 4+ Strike-type cards, this generates positive energy each turn.
Juggernaut + Block Generation: (Power, 2 energy, deal 1 damage to a random enemy whenever you gain Block) converts every point of Block into passive damage. Pair with (1 energy, 8 Block + draw 1) and (2 energy, 20 Block) for simultaneous defense and offense.
Spirit Enchantment + Exhaust: The top Chinese community build. Spirit enchantment reduces card costs, and combined with (all Skills cost 0, Exhaust after play) + (draw 1 whenever a card is Exhausted), creates explosive cycling turns with Strength scaling.
Silent has the highest damage ceiling of all five characters thanks to the Sly keyword. Poison builds are the reliable fallback, while Shiv builds offer burst potential.
Accelerant Poison Engine: and build the stack, then doubles the Poison damage ticks each round. still lets Silent duplicate her best skill effect in the key payoff turn, which is why Poison remains one of the cleanest scaling packages in the game even without relying on old STS1 finishers.
Sly Discard Engine (non-infinite version): Even without the full Schemer infinite, plus 3–4 Sly cards (, , , ) plays 3–4 extra cards per discard for 1 energy. (Power, gain 1 energy when a card is discarded) and (Power, discard 1, draw 1 at turn start) fuel the engine further.
Defect lost permanent Focus stacking from the original game, making Claw 0-cost spam the primary combo path. Orb builds still work but scale more slowly.
Claw Scaling Chain: (0 energy, base 3 damage, +2 permanent damage per Claw played this combat) pairs with (0 energy, draw 2 discard non-0-cost), (0 energy, 4 damage + draw 1 if <3 cards played), and (0 energy, 3 damage + Vulnerable). (0 energy, return all 0-cost cards from discard to hand) resets the cycle. By the third cycle, each Claw hits for 14+. Critical: do not bloat the deck with 0-cost cards that are not Claw, Scrape, or FTL — finding Claw consistently is the bottleneck.
Echo Form + High-Impact Cards: (Power, 3 energy, play first card each turn twice) doubles your strongest play each turn. Best with (0 energy, 6 Block + channel 2 Frost) or (1 energy, 7 damage + channel Lightning). Turns expensive single cards into double value.
Necrobinder has the steepest learning curve but the most unique combo lines. Doom execution, Soul cycling, and Osty minion damage are three separate engines that should not be mixed.
No Escape Exponential Doom: (1 energy) applies Doom that scales with the enemy's existing stacks, roughly doubling each successive play. After 3–4 plays the total can exceed most enemies' remaining HP, triggering instant death. Pair with (1 energy, gain Block equal to Doom) for defense while stacking.
Necrobinder Exhaust Cycling: Soul generation and Exhaust tools turn status cards and Wounds into fuel. Combined with (passive Soul damage) and (damage that permanently increases each time played), this creates an engine that accelerates every turn.
Osty Squeeze + Flatten: (3 energy) and (2 energy) together can deal hundreds of damage per turn through your Osty companion. (1 energy) heals Osty. This build is expensive in energy but devastating when Osty survives. Do not mix with Doom or Soul builds.
Regent operates on two mutually exclusive engines: Stars and Forge. Do not mix them. Stars builds accumulate a persistent resource to detonate in one turn. Forge builds permanently upgrade Sovereign Blade.
Seven Stars Boss Melt: (2 energy + 7 Stars, deal 7 damage 7 times to all enemies = 49 base damage per enemy). Every point of Strength adds 49 additional damage because the multiplier applies to each hit. With relic (+1 Strength per Star spent), a single Seven Stars can deal 200+ damage.
Big Bang 0-Cost Engine: (0 energy, gain 1 energy, draw 1, gain 5 Forge or Stars depending on build) is the Regent's cycling core. Repeatable each turn for net-positive energy. Pair with (2 energy, convert Stars to energy) and (1 energy, gain Stars) to fuel the Stars pool.
Sovereign Blade + Forge Stacking: (Retained weapon card) permanently gains damage from every Forge card played. (1 energy, Forge), (1 energy, damage + Forge), and (2 energy Power, passive Forge per turn) all feed the Blade. Keep deck size at 12–18 cards so the Blade appears every turn.
