Royal Stamp•Relic

Is Royal Stamp good in Slay the Spire 2?

In Slay the Spire 2, Royal Stamp is a shop relic you can pick up on your climb. Its effect: Upon pickup, choose an Attack or Skill in your Deck to Enchant with. Right now it’s a high-value grab, sitting at B tier — one of the relics most worth taking.

Over 58 tracked runs the win rate of decks holding it sits at 54.5%, 35.6% ahead of the 18.9% all-run baseline. It sees lighter play, carried in only 1.5% of runs. It does its best work in the hands of the Ironclad, who post a 66.7% win rate with it. Within Ironclad runs specifically, it’s carried 2.1% of the time.

Its standout card pairing is Capacitor, which lifts the relic’s win rate by +45.5% when both are in play. It also works nicely with Fasten, good for a +45.5% win-rate change. It typically enters the deck near floor 25. As a shop relic, how often it’s offered depends on its rarity tier.

Of the runs that carried it, 30 ended in victory while 25 fell to a defeat. Its most common run-ender is Entomancer Elite, finishing 5.2% of the runs it appears in. See the best cards, class split, and threats below for the full read on whether Royal Stamp is worth grabbing.

Best Cards with Royal Stamp

The cards that gain the most from carrying Royal Stamp are Capacitor (+45.5%), Fasten (+45.5%), and Supercritical (+45.5%), each shown with its win-rate swing.

Capacitor+45.5%3 runsFasten+45.5%4 runsSupercritical+45.5%3 runsCompile Driver+45.5%3 runsTempest+45.5%3 runsBouncing Flask+45.5%4 runs

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

Royal Stamp Win Rate by Class

Of the 5 classes that carry Royal Stamp, it performs best with Ironclad (66.7%), Defect (57.1%), and Silent (55.6%).

The Ironclad66.7%15 runsThe Defect57.1%7 runsThe Silent55.6%19 runsThe Necrobinder50.0%8 runsThe Regent28.6%9 runs

Royal Stamp Details

Carried in 1.5% of runs, Royal Stamp is a shop relic typically acquired near floor 25.

Upon pickup, choose an Attack or Skill in your Deck to Enchant with.

What Ends Runs with Royal Stamp

Runs carrying Royal Stamp end most often against Entomancer Elite (5.2%), Knowledge Demon Boss (5.2%), and Doormaker Boss (3.4%) — the share of its runs each accounts for is shown.

• Entomancer Elite5.2% of runs
• Knowledge Demon Boss5.2% of runs
• Doormaker Boss3.4% of runs
• Spiny Toad Normal3.4% of runs
• The Insatiable Boss3.4% of runs

See Also

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