Diamond DiademRelic
Whenever you play or fewer cards in a turn, take half damage from enemies.
Is Diamond Diadem good in Slay the Spire 2?
In Slay the Spire 2, Diamond Diadem is an ancient relic you can pick up on your climb. Its effect: Whenever you play or fewer cards in a turn, take half damage from enemies. Right now it’s a high-value grab, sitting at S tier — one of the relics most worth taking.
Over 8 tracked runs the win rate of decks holding it sits at 75.0%, 56.0% ahead of the 19.0% all-run baseline. It sees lighter play, carried in only 0.2% of runs. It does its best work in the hands of the Ironclad, who post a 100.0% win rate with it. Within Ironclad runs specifically, it’s carried 0.3% of the time.
Its standout card pairing is Defend, which lifts the relic’s win rate by -8.3% when both are in play. It also works nicely with Falling Star, good for a -8.3% win-rate change. It typically enters the deck near floor 33. As an ancient relic, how often it’s offered depends on its rarity tier.
Of the runs that carried it, 6 ended in victory while 2 fell to a defeat. Its most common run-ender is Test Subject Boss, finishing 25.0% of the runs it appears in. See the best cards, class split, and threats below for the full read on whether Diamond Diadem is worth grabbing.
Diamond Diadem Win Rate & Pick Rate
At a 75.0% win rate, Diamond Diadem runs 56.0% ahead of the 19.0% all-run baseline — the bars below put the two side by side.
Run Outcomes with Diamond Diadem
Across the 8 runs that carried Diamond Diadem, 6 ended in a win and 2 in a loss — a 75.0% win share, counting abandons as losses.
- Wins 75.0%
- Losses 25.0%
Best Cards with Diamond Diadem
The cards that gain the most from carrying Diamond Diadem are Defend (-8.3%), Falling Star (-8.3%), and Venerate (-8.3%), each shown with its win-rate swing.
Defend3 runs
Falling Star3 runs
Venerate3 runs
Spectrum Shift3 runs
Gather Light3 runs
Ascender's Bane5 runsBased on small co-occurring samples — treat these as early signals, not final verdicts.
Diamond Diadem Details
Carried in 0.2% of runs, Diamond Diadem is an ancient relic typically acquired near floor 33.
Whenever you play or fewer cards in a turn, take half damage from enemies.
What Ends Runs with Diamond Diadem
Runs carrying Diamond Diadem end most often against Test Subject Boss (25.0%) — the share of its runs each accounts for is shown.
- Test Subject Boss25.0% of runs
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Diamond Diadem – Frequently Asked Questions
Is Diamond Diadem good in Slay the Spire 2?
Across 8 tracked runs carrying it, Diamond Diadem wins 75.0% of the time — +56.0% above the average run. Win rate reflects how often runs with the relic end in victory.
What does Diamond Diadem do in Slay the Spire 2?
Whenever you play or fewer cards in a turn, take half damage from enemies.
How rare is Diamond Diadem in Slay the Spire 2?
Diamond Diadem is an Ancient relic, picked up in 0.2% of tracked runs.
What is the best card to use with Diamond Diadem?
In tracked runs, Diamond Diadem has performed best alongside Defend, which lifts its win rate by -8.3% over 3 runs together.
Which class is Diamond Diadem best in?
Diamond Diadem has its highest win rate with The Ironclad (100.0%).
See Also
Keep exploring Slay the Spire 2 tier lists and stats below.