Pen Nib•Relic

Is Pen Nib good in Slay the Spire 2?

In Slay the Spire 2, Pen Nib is an uncommon relic you can pick up on your climb. Its effect: Every 10th Attack you play deals double damage. The data marks it as a weaker relic, settling at D tier — rarely a run-defining grab.

Over 200 tracked runs the win rate of decks holding it sits at 37.8%, 18.9% ahead of the 19.0% all-run baseline. It sees lighter play, carried in only 5.3% of runs. It does its best work in the hands of the Necrobinder, who post a 45.7% win rate with it. Within Necrobinder runs specifically, it’s carried 4.5% of the time.

Its standout card pairing is Juggling, which lifts the relic’s win rate by +62.2% when both are in play. It also works nicely with Undeath, good for a +62.2% win-rate change. It typically enters the deck near floor 21. As an uncommon relic, how often it’s offered depends on its rarity tier.

Of the runs that carried it, 70 ended in victory while 115 fell to a defeat. Its most common run-ender is Knowledge Demon Boss, finishing 6.0% of the runs it appears in. See the best cards, class split, and threats below for the full read on whether Pen Nib is worth grabbing.

Best Cards with Pen Nib

The cards that gain the most from carrying Pen Nib are Juggling (+62.2%), Undeath (+62.2%), and Hang (+62.2%), each shown with its win-rate swing.

Juggling+62.2%5 runsUndeath+62.2%4 runsHang+62.2%5 runsDemonic Shield+62.2%4 runsFollow Through+62.2%4 runsVicious+62.2%3 runs

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

Pen Nib Win Rate by Class

Of the 5 classes that carry Pen Nib, it performs best with Necrobinder (45.7%), Ironclad (40.0%), and Silent (39.2%).

The Necrobinder45.7%37 runsThe Ironclad40.0%38 runsThe Silent39.2%57 runsThe Regent32.3%33 runsThe Defect30.3%35 runs

Pen Nib Details

Carried in 5.3% of runs, Pen Nib is an uncommon relic typically acquired near floor 21.

Every 10th Attack you play deals double damage.

What Ends Runs with Pen Nib

Runs carrying Pen Nib end most often against Knowledge Demon Boss (6.0%), Queen Boss (5.0%), and Test Subject Boss (4.5%) — the share of its runs each accounts for is shown.

• Knowledge Demon Boss6.0% of runs
• Queen Boss5.0% of runs
• Test Subject Boss4.5% of runs
• Infested Prisms Elite4.0% of runs
• The Kin Boss3.0% of runs

See Also

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