The Abacus•Relic

Is The Abacus good in Slay the Spire 2?

In Slay the Spire 2, The Abacus is a shop relic you can pick up on your climb. Its effect: Whenever you shuffle your Draw Pile, gain Block. The data marks it as a weaker relic, settling at D tier — rarely a run-defining grab.

Over 29 tracked runs the win rate of decks holding it sits at 32.1%, 13.2% ahead of the 19.0% all-run baseline. It sees lighter play, carried in only 0.8% of runs. It does its best work in the hands of the Silent, who post a 54.5% win rate with it. Within Silent runs specifically, it’s carried 1.1% of the time.

Its standout card pairing is Envenom, which lifts the relic’s win rate by +67.9% when both are in play. It also works nicely with Leading Strike, good for a +67.9% win-rate change. It typically enters the deck near floor 27. As a shop relic, how often it’s offered depends on its rarity tier.

Of the runs that carried it, 9 ended in victory while 19 fell to a defeat. Its most common run-ender is Knowledge Demon Boss, finishing 13.8% of the runs it appears in. See the best cards, class split, and threats below for the full read on whether The Abacus is worth grabbing.

Best Cards with The Abacus

The cards that gain the most from carrying The Abacus are Envenom (+67.9%), Leading Strike (+67.9%), and Finesse (+67.9%), each shown with its win-rate swing.

Envenom+67.9%3 runsLeading Strike+67.9%4 runsFinesse+67.9%3 runsRicochet+67.9%3 runsExpose+67.9%3 runsSlice+67.9%4 runs

Based on small co-occurring samples — treat these as early signals, not final verdicts.

The Abacus Win Rate by Class

Of the 5 classes that carry The Abacus, it performs best with Silent (54.5%), Regent (33.3%), and Defect (20.0%).

The Silent54.5%11 runsThe Regent33.3%3 runsThe Defect20.0%6 runsThe Necrobinder16.7%6 runsThe Ironclad0.0%3 runs

The Abacus Details

Carried in 0.8% of runs, The Abacus is a shop relic typically acquired near floor 27.

Whenever you shuffle your Draw Pile, gain Block.

What Ends Runs with The Abacus

Runs carrying The Abacus end most often against Knowledge Demon Boss (13.8%), Kaiser Crab Boss (6.9%), and The Insatiable Boss (6.9%) — the share of its runs each accounts for is shown.

• Knowledge Demon Boss13.8% of runs
• Kaiser Crab Boss6.9% of runs
• The Insatiable Boss6.9% of runs

See Also

Keep exploring Slay the Spire 2 tier lists and stats below.