Primal Force•Skill

Is Primal Force good in Slay the Spire 2?

In Slay the Spire 2, Primal Force is a rare skill from the Ironclad card pool. Its effect: Transform all Attacks in your Hand into Giant Rock. The data flags it as a weaker pick, settling at F tier — usually one to pass on unless your deck specifically wants it.

Over 38 tracked runs its win rate sits at 21.6%, 2.7% ahead of the 19.0% all-deck baseline. It sees niche play, included in only 1.0% of eligible runs. Within Ironclad runs it’s drafted 5.4% 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 Offering, which lifts its win rate by +15.3% when the two share a deck. On the relic side, Blood Vial??? is its standout companion, worth a +18.1% win-rate swing alongside it. It costs 0 energy, gets upgraded 50.0% of the time, and tends to be picked up near floor 14.

Of the runs that drafted it, 8 ended in victory against 29 deaths and 1 abandons. Its most common run-ender is Kaiser Crab Boss, finishing 10.5% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Primal Force fits a Ironclad deck.

Best Cards to Pair with Primal Force

Primal Force’s strongest card pairings so far are Offering (+15.3%), Burning Pact (+12.8%), and Inflame (+12.5%), each shown with the win-rate lift it adds.

Offering+15.3%4 runsBurning Pact+12.8%5 runsInflame+12.5%11 runsThunderclap+12.5%12 runsDemon Form+10.6%6 runsCascade+10.4%4 runs

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

Primal Force Win Rate by Class

Exclusive to the Ironclad, Primal Force posts a 21.6% win rate over 38 tracked runs.

The Ironcladappears in 5.4% of its runs (38 tracked)

Best Relics for Primal Force

The relics that swing Primal Force’s win rate the most are Blood Vial??? (+18.1%), Eternal Feather (+16.9%), and Stone Cracker (+15.3%), with each lift shown.

Blood Vial???+18.1%3 runsEternal Feather+16.9%6 runsStone Cracker+15.3%5 runsVenerable Tea Set+14.6%7 runsBag of Marbles+12.8%5 runsHappy Flower+10.6%6 runs

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

Primal Force Card Details

A 0-energy rare skill, Primal Force is upgraded 50.0% of the time and tends to enter the deck around floor 14.

Transform all Attacks in your Hand into Giant Rock.

What Ends Runs with Primal Force

Runs holding Primal Force end most often against Kaiser Crab Boss (10.5%), Knowledge Demon Boss (10.5%), and The Insatiable Boss (10.5%) — the share of its runs each accounts for is shown.

• Kaiser Crab Boss10.5% of runs
• Knowledge Demon Boss10.5% of runs
• The Insatiable Boss10.5% of runs
• Test Subject Boss7.9% of runs
• Queen Boss5.3% of runs

See Also

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