Molten Fist Attack

Is Molten Fist good in Slay the Spire 2?

Molten Fist is a common Ironclad attack in Slay the Spire 2. In combat it resolves as: Deal 10 damage. Double the enemy's Vulnerable. It currently underperforms most alternatives, sitting at D tier in our Slay the Spire 2 card rankings.

Across 1451 recorded runs, decks running it win 22.3% of the time, comfortably clear of the 14.3% average, by 8.0%. It’s a more selective pick, turning up in just 5.4% of decks that could run it. Offer data backs the pick — taken 26.6% of the time it is shown, with 22.4% for runs that took it against 20.3% for runs that did not, a +2.0% pick lift across 1263 decided runs. Ironclad players keep it in 24.3% of their runs, so it’s a familiar sight in those decks. On average it shows up 1.4 times in the decks that take it.

It performs best next to Demonic Shield — together they post a +30.7% swing in win rate. It also has strong chemistry with the relic History Course, which moves its win rate by +50.8%. At 1 energy, it’s upgraded in 23.5% of runs and usually joins the deck around floor 13.

Upgraded, it gains +4 Damage, which is why so many decks invest a rest-site upgrade in it. That’s 321 wins, 1117 deaths, and 13 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Kaiser Crab Boss, which closes out 6.5% of its appearances. Read on for Molten Fist’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Ironclad run.

Pick or Skip: Molten Fist

Out of 6030 recorded offers Molten Fist is taken 26.6% of the time, and taking it is worth +2.0% in pick lift — 22.4% for runs that picked it against 20.3% for runs that skipped, across 1263 decided runs.

Taken 1601 times out of 6030 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.

When to Pick Up Molten Fist

Molten Fist is strongest when it joins the deck in Act 3, where runs win 58.5% across 107 runs — one of 4 recorded pickup windows.

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

Best Cards to Pair with Molten Fist

Ranked by win-rate lift, Molten Fist performs best alongside Demonic Shield (+30.7%), Prolong (+27.0%), and Mad Science (+25.4%).

Demonic Shield+30.7%64 runsProlong+27.0%31 runsMad Science+25.4%110 runsHidden Gem+23.3%30 runsWhistle+22.6%15 runsStoke+21.6%102 runs

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

Molten Fist Win Rate by Class

Molten Fist is drafted only by the Ironclad, where it holds a 22.3% win rate across 1431 runs.

The Ironcladappears in 24.3% of its runs (1431 tracked)

Best Relics for Molten Fist

Molten Fist pairs best with the relics History Course (+50.8%), Sai (+39.4%), and Sword of Jade (+36.4%), ranked by win-rate lift.

History Course+50.8%30 runsSai+39.4%26 runsSword of Jade+36.4%33 runsBrilliant Scarf+34.6%15 runsPocketwatch+31.4%50 runsCrossbow+30.0%21 runs

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

Molten Fist Card Details

Molten Fist is a common attack costing 1 energy; it’s upgraded in 23.5% of runs and usually picked up by floor 13.

Deal 10 damage. Double the enemy's Vulnerable.

Upgrade: +4 Damage

What Ends Runs with Molten Fist

Molten Fist’s most common run-enders are Kaiser Crab Boss (6.5%), Test Subject Boss (6.0%), and Decimillipede Elite (4.5%).

• Kaiser Crab Boss6.5% of runs
• Test Subject Boss6.0% of runs
• Decimillipede Elite4.5% of runs
• Knowledge Demon Boss4.3% of runs
• Queen Boss4.3% of runs

See Also

Compare Molten Fist with the rest of the best Slay the Spire 2 cards, relics, and classes below.