Slay the Spire 2 Defect Card Tier List (Major Update 2)
Every Defect card ranked after the 0.107 reworks
TL;DR
As of Major Update 2 (v0.107.1, June 19 2026), the item:defect's best cards are the ones that turn orbs into scaling damage, not the ones that pile up block. The new Act 3 boss, Aeonglass, stuffs your deck with unplayable Wither cards and ramps their damage every few turns, so a deck that only blocks loses the race. This patch buffed the Defect's Lightning and direct-damage line and reworked Shatter into a double-evoke finisher. The spine of a winning deck is item:synchronize plus item:capacitor plus a real damage payoff. Pure Frost Tank, the old top pick, is now the build most likely to die to the Aeonglass clock.
The Defect currently sits last of five characters by win rate (around 29.8 percent across 23,000-plus logged runs), but the spread between top and bottom is narrow. Your draft and your Ascension matter far more than the character you picked.
Why the meta moved
Major Update 2 removed Doormaker and replaced it with Aeonglass. The new boss runs a mechanic called Withering Presence: it slots a Wither status card into your deck every six cards you play, and those Withers are unplayable on the main branch. Every three turns Aeonglass upgrades the Withers it has added for plus 3 damage each. Late-game hands clog with cards that do nothing for you and deal escalating chip damage. The fight rewards decks that close fast and decks that can exhaust junk.
That single change rewrites the Defect tier list. The old advice told you to stack Frost and out-block the boss. Against Aeonglass, out-blocking is a losing plan because the damage scales past anything your block can outpace around turn 10 to 12. Every Defect draft now needs a way to deal real, scaling damage and ideally a way to shed the Wither cards through Exhaust. The patch buffs line up with this pressure: Hyperbeam, Synthesis, Uproar, Tesla Coil, and the item:infused-core relic all got better, and they all push damage. For the boss roster behind this shift, see our Act 3 boss relic guide.
S Tier
These cards win games on their own or form the spine of the strongest builds.
item:synchronize is the single best Focus source in the game. When all three orb types sit in your queue at once, Synchronize hands you free Focus every turn it stays in play. Two or three Focus stacks turn Frost block from decent into unkillable and Dark evokes from threatening into boss-ending. Glass Orb now gives you a cheap third orb type to keep Synchronize firing, which makes it easier to draft around than it was last patch.
Shatter got reworked and stayed in S tier. It now evokes all of your orbs twice instead of once, at lower per-evoke damage (7 base, 11 upgraded, down from 11 and 15). With a loaded Dark or Glass queue and a few Focus behind it, the double trigger is a fight-ending swing. The rework changed how it pays off, not whether you take it.
item:capacitor sets the ceiling for everything else. Three orb slots is the default; Capacitor pushes that to four or five. Each extra slot is one more passive trigger per turn from every orb you run, which compounds your damage and your block at the same time. Take it before Act 2 without thinking twice.
Echo Form doubles the first card you play each turn for the rest of combat. It doubles a Shatter, a Synchronize, a big Lightning evoke, whatever your turn-one play is. The infinite-energy loops that built around it earlier in early access are gone, but as a straight doubler it is still one of the best rares in the pool.
A Tier
Strong in most builds, but they want a supporting engine to hit their ceiling.
Hyperbeam is now the Defect's most reliable big-damage button: 28 base, 36 upgraded after this patch's buff. Against Aeonglass it does exactly what the meta asks for, a large damage spike that does not care how much block you have.
item:cold-snap is still the most efficient Frost generator at common rarity. One energy buys damage and a Frost channel, and in a Focus deck each Frost orb starts pumping block from the moment it lands. It anchors any Frost-leaning Act 1.
Synthesis and Uproar both gained damage this patch (14 from 12, and 6 from 5 respectively). They reinforce the direct-damage plan that the new boss demands and give Lightning and burst decks more reach than they had before.
item:defragment is the cheapest Focus source outside Synchronize: a Power that grants permanent Focus for one energy. Pick up one or two by Act 2 and your damage and block both scale on their own.
Sunder answers high-HP targets that do not die to Dark evokes. Big single-target damage with an orb interaction makes it flexible as a finisher in Frost decks and a supplement during the turns your Dark orbs are still charging.
item:dualcast is in the starting deck for a reason. Evoke the leftmost orb twice from one card. Early it pushes out Lightning evokes; late it triggers Frost cashouts or fires a Dark stack a turn early. It does not scale like the true S cards, but it earns a slot deep into Act 3.
B Tier
Situationally good. They earn a slot in specific builds, not every deck.
Tesla Coil is worth a look now that the upgrade fires Lightning twice (at 4 damage per trigger instead of 6). In a Lightning-forward deck that keeps Lightning orbs channeled, the doubled trigger turns it into steady passive damage. Outside a Lightning shell it stays niche.
item:zap makes a single Lightning channel. In the starting deck it is your only damage outside Strikes, and it earns its keep in a Synchronize deck where you need all three orb types present. One Zap in a tight Synchronize list is right; more than that dilutes your Focus generators.
Dark Shackles applies a debuff when a Dark orb is evoked. Pair it with Sunder or another big attack inside the Weakened window and you get a damage spike. It does nothing outside Dark decks, where it bridges your ramp turns and your evoke payoff.
Reboot shuffles your discard into your draw pile and draws. Its value tracks your deck size: a liability in a thin deck built to see Echo Form every turn, useful in a bloated deck that needs to dig for Focus cards.
C Tier
Cards that get outpriced as the run goes on.
Redundant single-orb channels that generate no block, no Focus, and no evoke payoff fall here by late Act 2. A third Zap in a Frost deck, a Lightning-only channel in a Dark Nuker, a plain block card that touches no orb mechanic: all candidates to cut once you have removal. Recognize which early pickups no longer fit the engine and trim them before they crowd your draws in the final fight.
FAQ
What is the best Defect archetype right now?
A damage-forward Defect that still runs Frost for survival. The clean version is Synchronize plus Capacitor plus a payoff card (Shatter, a Dark queue, or a buffed Lightning line) and at least one Exhaust outlet to shed Aeonglass Withers. Pure Frost Tank, last patch's safest pick, is the build Aeonglass punishes hardest because block alone cannot keep pace with the boss damage ramp. The list below is that exact deck; for the full walkthrough see our Defect Frost Tank build guide.
Build: 304433a90186How does Glass Orb compare to the other orb types?
Glass Orb is the AOE orb new to Slay the Spire 2. It channels at value 4, its passive deals its current value to every enemy at end of turn and then drops by 1, and its evoke deals twice the current value to all enemies. It shines in wide encounters and gives Synchronize a cheap third orb type. Against single-target bosses it does less than Lightning or Dark, so treat it as a tool for fights with multiple targets and a Synchronize enabler everywhere else.
What is the role of Focus in orb scaling?
Focus adds plus 1 to both the passive and the evoke of every orb except Plasma. A Frost orb at zero Focus passively makes 2 block; at three Focus it makes 5. Each stack compounds across your whole queue every turn, so a five-slot Frost build with three Focus generates 25 passive block before you play a card. That compounding is why Defragment and Synchronize rank so high; they feed the core multiplier. For where these cards' enabling relics land, see our relic tier list.
Can the Defect still run infinite Echo Form combos?
No. Earlier early-access patches closed the mid-loop energy generation those combos relied on. Echo Form is still one of the strongest rares, but it works as an efficient doubler of your best card each turn, not as an infinite engine. Decks that used to chase the loop now play as conventional Echo Form decks and remain very strong.