Tanx's WhistleRelic
Upon pickup, add 1 Whistle to your Deck.
Is Tanx's Whistle good in Slay the Spire 2?
In Slay the Spire 2, Tanx's Whistle is an ancient relic you can pick up on your climb. Its effect: Upon pickup, add 1 Whistle to your Deck. The data marks it as a weaker relic, settling at D tier — rarely a run-defining grab.
Over 13 tracked runs the win rate of decks holding it sits at 30.8%, 11.8% ahead of the 18.9% all-run baseline. It sees lighter play, carried in only 0.3% of runs. It does its best work in the hands of the Silent, who post a 50.0% win rate with it. Within Silent runs specifically, it’s carried 0.2% of the time.
Its standout card pairing is Unmovable, which lifts the relic’s win rate by +19.2% when both are in play. It also works nicely with Bash, good for a +9.2% win-rate change. It typically enters the deck near floor 34. As an ancient relic, how often it’s offered depends on its rarity tier.
Of the runs that carried it, 4 ended in victory while 9 fell to a defeat. Its most common run-ender is Test Subject Boss, finishing 23.1% of the runs it appears in. See the best cards, class split, and threats below for the full read on whether Tanx's Whistle is worth grabbing.
Tanx's Whistle Win Rate & Pick Rate
At a 30.8% win rate, Tanx's Whistle runs 11.8% ahead of the 18.9% all-run baseline — the bars below put the two side by side.
Run Outcomes with Tanx's Whistle
Across the 13 runs that carried Tanx's Whistle, 4 ended in a win and 9 in a loss — a 30.8% win share, counting abandons as losses.
- Wins 30.8%
- Losses 69.2%
Tanx's Whistle Win Rate by Class
Of the 4 classes that carry Tanx's Whistle, it performs best with Silent (50.0%), Ironclad (40.0%), and Necrobinder (33.3%).
Tanx's Whistle Details
Carried in 0.3% of runs, Tanx's Whistle is an ancient relic typically acquired near floor 34.
Upon pickup, add 1 Whistle to your Deck.
What Ends Runs with Tanx's Whistle
Runs carrying Tanx's Whistle end most often against Test Subject Boss (23.1%) — the share of its runs each accounts for is shown.
- Test Subject Boss23.1% of runs
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Tanx's Whistle – Frequently Asked Questions
Is Tanx's Whistle good in Slay the Spire 2?
Across 13 tracked runs carrying it, Tanx's Whistle wins 30.8% of the time — +11.8% above the average run. Win rate reflects how often runs with the relic end in victory.
What does Tanx's Whistle do in Slay the Spire 2?
Upon pickup, add 1 Whistle to your Deck.
How rare is Tanx's Whistle in Slay the Spire 2?
Tanx's Whistle is an Ancient relic, picked up in 0.3% of tracked runs.
What is the best card to use with Tanx's Whistle?
In tracked runs, Tanx's Whistle has performed best alongside Unmovable, which lifts its win rate by +19.2% over 4 runs together.
Which class is Tanx's Whistle best in?
Tanx's Whistle has its highest win rate with The Silent (50.0%).
See Also
Keep exploring Slay the Spire 2 tier lists and stats below.