Dualcast Skill

Is Dualcast good in Slay the Spire 2?

In Slay the Spire 2, Dualcast is a basic skill from the Defect card pool. Its effect: Evoke your rightmost Orb twice. The data flags it as a weaker pick, settling at D tier — usually one to pass on unless your deck specifically wants it.

Over 4335 tracked runs its win rate sits at 7.8%, 6.0% short of the 13.8% all-deck baseline. Players reach for it often — it shows up in 20.7% of runs that can take it. Within Defect runs it’s drafted 94.8% of the time, making it a regular part of that class’s decks. Decks that include it run about 1.0 copies on average.

Its standout pairing so far is Apotheosis, which lifts its win rate by +42.9% when the two share a deck. On the relic side, History Course is its standout companion, worth a +52.1% win-rate swing alongside it. It costs 1 energy, gets upgraded 14.7% of the time, and tends to be picked up near floor 1.

Upgrading the card adds -1 EnergyCost to its stat line. Of the runs that drafted it, 333 ended in victory against 3911 deaths and 91 abandons. Its most common run-ender is Kaiser Crab Boss, finishing 3.4% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Dualcast fits a Defect deck.

When to Pick Up Dualcast

Of the 2 pickup windows recorded for Dualcast, Act 2 is the best: 30.8% across 13 runs.

Win rate of runs by the act Dualcast entered the deck. Acts that have not reached the sample floor show their run count only.

Best Cards to Pair with Dualcast

Dualcast’s strongest card pairings so far are Apotheosis (+42.9%), Apparition (+36.2%), and Mad Science (+34.1%), each shown with the win-rate lift it adds.

Apotheosis+42.9%27 runsApparition+36.2%19 runsMad Science+34.1%130 runsCatastrophe+24.7%17 runsProduction+24.6%54 runsMayhem+24.0%27 runs

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

Dualcast Win Rate by Class

Exclusive to the Defect, Dualcast posts a 7.8% win rate over 4335 tracked runs.

The Defectappears in 94.8% of its runs (4335 tracked)

Best Relics for Dualcast

The relics that swing Dualcast’s win rate the most are History Course (+52.1%), Signet Ring (+43.8%), and Iron Club (+43.0%), with each lift shown.

History Course+52.1%18 runsSignet Ring+43.8%39 runsIron Club+43.0%25 runsJewelry Box+42.9%27 runsSword of Jade+39.9%44 runsBeautiful Bracelet+37.5%27 runs

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

Dualcast Card Details

A 1-energy basic skill, Dualcast is upgraded 14.7% of the time and tends to enter the deck around floor 1.

Evoke your rightmost Orb twice.

Upgrade: -1 EnergyCost

What Ends Runs with Dualcast

Runs holding Dualcast end most often against Kaiser Crab Boss (3.4%), Knowledge Demon Boss (3.0%), and Phantasmal Gardeners Elite (2.8%) — the share of its runs each accounts for is shown.

• Kaiser Crab Boss3.4% of runs
• Knowledge Demon Boss3.0% of runs
• Phantasmal Gardeners Elite2.8% of runs
• The Kin Boss2.6% of runs
• Lagavulin Matriarch Boss2.6% of runs

See Also

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