Heirloom Hammer•Attack

Is Heirloom Hammer good in Slay the Spire 2?

Heirloom Hammer is a rare Regent attack in Slay the Spire 2. In combat it resolves as: Deal 20 damage. Choose a Colorless card in your Hand. Add a copy of that card into your Hand. It ranks among the strongest cards its class can draft right now, earning a spot at B tier in our Slay the Spire 2 card tier list.

Across 29 recorded runs, decks running it win 39.3% of the time, comfortably clear of the 18.9% average, by 20.3%. It’s a more selective pick, turning up in just 0.8% of decks that could run it. Regent players keep it in 4.3% of their runs, so it’s a familiar sight in those decks. On average it shows up 1.0 times in the decks that take it.

It performs best next to Glow — together they post a +27.0% swing in win rate. It also has strong chemistry with the relic Lantern, which moves its win rate by +20.2%. At 2 energy, it’s upgraded in 31.0% of runs and usually joins the deck around floor 17.

Upgraded, it gains +5 Damage, which is why so many decks invest a rest-site upgrade in it. That’s 11 wins, 17 deaths, and 1 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Soul Fysh Boss, which closes out 10.3% of its appearances. Read on for Heirloom Hammer’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Regent run.

Best Cards to Pair with Heirloom Hammer

Ranked by win-rate lift, Heirloom Hammer performs best alongside Glow (+27.0%), Radiate (+19.1%), and Parry (+17.4%).

Glow+27.0%11 runsRadiate+19.1%7 runsParry+17.4%4 runsBig Bang+16.5%6 runsChild of the Stars+16.5%6 runsReflect+16.5%6 runs

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

Heirloom Hammer Win Rate by Class

Heirloom Hammer is drafted only by the Regent, where it holds a 39.3% win rate across 29 runs.

The Regentappears in 4.3% of its runs (29 tracked)

Best Relics for Heirloom Hammer

Heirloom Hammer pairs best with the relics Lantern (+20.2%), Horn Cleat (+19.1%), and Centennial Puzzle (+16.5%), ranked by win-rate lift.

Lantern+20.2%5 runsHorn Cleat+19.1%7 runsCentennial Puzzle+16.5%6 runsMeal Ticket+16.5%6 runsGorget+16.5%6 runsNunchaku+14.0%3 runs

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

Heirloom Hammer Card Details

Heirloom Hammer is a rare attack costing 2 energy; it’s upgraded in 31.0% of runs and usually picked up by floor 17.

Deal 20 damage. Choose a Colorless card in your Hand. Add a copy of that card into your Hand.

Upgrade: +5 Damage

What Ends Runs with Heirloom Hammer

Heirloom Hammer’s most common run-enders are Soul Fysh Boss (10.3%) and Knowledge Demon Boss (6.9%).

• Soul Fysh Boss10.3% of runs
• Knowledge Demon Boss6.9% of runs

See Also

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