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 12 recorded runs, decks running it win 25.0% of the time, comfortably clear of the 12.6% average, by 12.4%. It’s a more selective pick, turning up in just 2.3% of decks that could run it. Regent players keep it in 7.2% 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 Spoils of Battle — together they post a +50.0% swing in win rate. It also has strong chemistry with the relic Ripple Basin, which moves its win rate by +41.7%. At 2 energy, it’s upgraded in 50.0% of runs and usually joins the deck around floor 14.

Upgraded, it gains +5 Damage, which is why so many decks invest a rest-site upgrade in it. That’s 3 wins, 9 deaths, and 0 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Soul Fysh Boss, which closes out 16.7% 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 Spoils of Battle (+50.0%), Reflect (+50.0%), and Toric Toughness (+41.7%).

Spoils of Battle+50.0%4 runsReflect+50.0%4 runsToric Toughness+41.7%3 runsBulwark+41.7%3 runsHidden Cache+41.7%3 runsGather Light+25.0%4 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 25.0% win rate across 12 runs.

The Regentappears in 7.2% of its runs (12 tracked)

Best Relics for Heirloom Hammer

Heirloom Hammer pairs best with the relics Ripple Basin (+41.7%), Horn Cleat (+41.7%), and Strike Dummy (+25.0%), ranked by win-rate lift.

Ripple Basin+41.7%3 runsHorn Cleat+41.7%3 runsStrike Dummy+25.0%4 runsBronze Scales+8.3%3 runsDivine Right0.0%12 runsHefty Tablet-25.0%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 50.0% of runs and usually picked up by floor 14.

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 (16.7%).

• Soul Fysh Boss16.7% of runs

See Also

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