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. Performance-wise it’s a steady, unspectacular pick rated C tier overall.

Over 119 tracked runs the win rate of decks holding it sits at 54.6%, 40.8% ahead of the 13.8% all-run baseline. It sees lighter play, carried in only 0.6% of runs. It does its best work in the hands of the Regent, who post a 68.2% win rate with it. Within Regent runs specifically, it’s carried 0.7% of the time.

Its standout card pairing is Glow, which lifts the relic’s win rate by +12.1% when both are in play. It also works nicely with Blade Dance, good for a +12.1% win-rate change. It typically enters the deck near floor 29. As a shop relic, how often it’s offered depends on its rarity tier.

Of the runs that carried it, 65 ended in victory while 54 fell to a defeat. Its most common run-ender is Test Subject Boss, finishing 6.7% 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.

Pick or Skip: The Abacus

Players take The Abacus in 8.6% of the 1403 offers it appears in; those runs win 55.4% against 25.7% for runs that passed, a pick lift of +27.4% over 121 decided runs.

Taken 121 times out of 1403 offers.

Pick rate when offered counts offers, not runs: out of every time the game put this in front of a player, how often it was taken. It is not the same number as the share of runs that end up containing it.

Pick lift is the sample-adjusted gap between runs that took the option and runs that passed on it. It is the fair way to rank choices, because raw win rates put the smallest samples on top.

Best Cards with The Abacus

The cards that gain the most from carrying The Abacus are Glow (+12.1%), Blade Dance (+12.1%), and Falling Star (+7.9%), each shown with its win-rate swing.

Glow+12.1%15 runsBlade Dance+12.1%18 runsFalling Star+7.9%16 runsVenerate+4.2%17 runsPrepared+0.9%18 runsBodyguard-1.3%15 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 Regent (68.2%), Necrobinder (56.3%), and Defect (52.6%).

The Regent68.2%22 runsThe Necrobinder56.3%16 runsThe Defect52.6%19 runsThe Silent51.4%35 runsThe Ironclad45.5%22 runs

The Abacus Details

Carried in 0.6% of runs, The Abacus is a shop relic typically acquired near floor 29.

Whenever you shuffle your Draw Pile, gain Block.

What Ends Runs with The Abacus

Runs carrying The Abacus end most often against Test Subject Boss (6.7%), Knowledge Demon Boss (5.0%), and Queen Boss (4.2%) — the share of its runs each accounts for is shown.

• Test Subject Boss6.7% of runs
• Knowledge Demon Boss5.0% of runs
• Queen Boss4.2% of runs
• Kaiser Crab Boss3.4% of runs
• Mecha Knight Elite3.4% of runs

See Also

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