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 F tier — usually one to pass on unless your deck specifically wants it.

Over 556 tracked runs its win rate sits at 15.5%, 3.5% short of the 18.9% all-deck baseline. Players reach for it often — it shows up in 14.7% of runs that can take it. Within Defect runs it’s drafted 95.2% 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 Machine Learning, which lifts its win rate by +21.5% when the two share a deck. On the relic side, Joss Paper is its standout companion, worth a +26.7% win-rate swing alongside it. It costs 1 energy, gets upgraded 19.5% 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, 65 ended in victory against 355 deaths and 136 abandons. Its most common run-ender is Queen Boss, finishing 4.7% 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.

Best Cards to Pair with Dualcast

Dualcast’s strongest card pairings so far are Machine Learning (+21.5%), Prolong (+20.5%), and Flak Cannon (+17.4%), each shown with the win-rate lift it adds.

Machine Learning+21.5%39 runsProlong+20.5%12 runsFlak Cannon+17.4%21 runsProduction+17.3%11 runsDecay+17.3%12 runsUltimate Defend+16.6%26 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 15.5% win rate over 556 tracked runs.

The Defectappears in 95.2% of its runs (556 tracked)

Best Relics for Dualcast

The relics that swing Dualcast’s win rate the most are Joss Paper (+26.7%), Sword of Jade (+25.4%), and Venerable Tea Set??? (+24.3%), with each lift shown.

Joss Paper+26.7%16 runsSword of Jade+25.4%6 runsVenerable Tea Set???+24.3%11 runsData Disk+24.0%45 runsIntimidating Helmet+23.4%13 runsGlitter+23.0%9 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 19.5% 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 Queen Boss (4.7%), Kaiser Crab Boss (4.1%), and Knowledge Demon Boss (3.4%) — the share of its runs each accounts for is shown.

• Queen Boss4.7% of runs
• Kaiser Crab Boss4.1% of runs
• Knowledge Demon Boss3.4% of runs
• Phantasmal Gardeners Elite3.4% of runs
• Decimillipede Elite3.2% of runs

See Also

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