Self-Forming ClayRelic
Whenever you lose HP in combat, gain Block next turn.
Is Self-Forming Clay good in Slay the Spire 2?
In Slay the Spire 2, Self-Forming Clay is an uncommon relic you can pick up on your climb. Its effect: Whenever you lose HP in combat, gain Block next turn. The data marks it as a weaker relic, settling at D tier — rarely a run-defining grab.
Over 16 tracked runs the win rate of decks holding it sits at 33.3%, 14.4% ahead of the 18.9% all-run baseline. It sees lighter play, carried in only 0.4% of runs. It does its best work in the hands of the Ironclad, who post a 33.3% win rate with it. Within Ironclad runs specifically, it’s carried 2.3% of the time.
Its standout card pairing is Crimson Mantle, which lifts the relic’s win rate by +66.7% when both are in play. It also works nicely with Spite, good for a +66.7% win-rate change. It typically enters the deck near floor 15. As an uncommon relic, how often it’s offered depends on its rarity tier.
Of the runs that carried it, 5 ended in victory while 10 fell to a defeat. Its most common run-ender is Test Subject Boss, finishing 12.5% of the runs it appears in. See the best cards, class split, and threats below for the full read on whether Self-Forming Clay is worth grabbing.
Self-Forming Clay Win Rate & Pick Rate
At a 33.3% win rate, Self-Forming Clay runs 14.4% ahead of the 18.9% all-run baseline — the bars below put the two side by side.
Run Outcomes with Self-Forming Clay
Across the 16 runs that carried Self-Forming Clay, 5 ended in a win and 11 in a loss — a 31.3% win share, counting abandons as losses.
- Wins 31.3%
- Losses 68.8%
Best Cards with Self-Forming Clay
The cards that gain the most from carrying Self-Forming Clay are Crimson Mantle (+66.7%), Spite (+66.7%), and Breakthrough (+33.3%), each shown with its win-rate swing.
Crimson Mantle3 runs
Spite3 runs
Breakthrough6 runs
Pommel Strike6 runs
Whirlwind3 runs
Ascender's Bane4 runsBased on small co-occurring samples — treat these as early signals, not final verdicts.
Self-Forming Clay Win Rate by Class
Self-Forming Clay’s class data comes mostly from the Ironclad, at a 33.3% win rate over 16 runs.
The Ironcladappears in 2.3% of its runs (16 tracked)Self-Forming Clay Details
Carried in 0.4% of runs, Self-Forming Clay is an uncommon relic typically acquired near floor 15.
Whenever you lose HP in combat, gain Block next turn.
What Ends Runs with Self-Forming Clay
Runs carrying Self-Forming Clay end most often against Test Subject Boss (12.5%) — the share of its runs each accounts for is shown.
- Test Subject Boss12.5% of runs
Get the Winning Edge
Real-time overlays, automatic match tracking, and exclusive tools — everything you need to climb, free on your PC.
- In-game overlays
- Automatic match tracking
- Desktop-exclusive tools
Help us maintain accuracy! If you notice incorrect stats, missing data, or any issues, your feedback directly improves the quality of our data for the entire community.
Self-Forming Clay – Frequently Asked Questions
Is Self-Forming Clay good in Slay the Spire 2?
Across 16 tracked runs carrying it, Self-Forming Clay wins 33.3% of the time — +14.4% above the average run. Win rate reflects how often runs with the relic end in victory.
What does Self-Forming Clay do in Slay the Spire 2?
Whenever you lose HP in combat, gain Block next turn.
How rare is Self-Forming Clay in Slay the Spire 2?
Self-Forming Clay is an Uncommon relic, picked up in 0.4% of tracked runs.
What is the best card to use with Self-Forming Clay?
In tracked runs, Self-Forming Clay has performed best alongside Crimson Mantle, which lifts its win rate by +66.7% over 3 runs together.
See Also
Keep exploring Slay the Spire 2 tier lists and stats below.