Tanx's Whistle Relic

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. Performance-wise it’s a steady, unspectacular pick rated C tier overall.

Over 54 tracked runs the win rate of decks holding it sits at 46.3%, 32.4% ahead of the 13.9% all-run baseline. It sees lighter play, carried in only 0.5% of runs. It does its best work in the hands of the Ironclad, who post a 65.0% win rate with it. Within Ironclad runs specifically, it’s carried 0.7% of the time.

Its standout card pairing is Strike, which lifts the relic’s win rate by +22.1% when both are in play. It also works nicely with Defend, good for a +22.1% 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, 25 ended in victory while 29 fell to a defeat. Its most common run-ender is Aeonglass Boss, finishing 14.8% 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.

Pick or Skip: Tanx's Whistle

Across 54 offers Tanx's Whistle has a 100.0% pick rate; the 54 runs that took it and 0 that left it are still below the sample floor, so no win rate is shown.

Taken 54 times out of 54 offers.

A win rate is only shown once that side clears the sample floor. Below it you get the run counts and nothing else — a 0% here would be a reporting artefact, not a result.

Pick rate when offered counts offers, not runs: out of every time the game put this in front of a player, how often it was taken. It is not the same number as the share of runs that end up containing it.

Pick lift is the sample-adjusted gap between runs that took the option and runs that passed on it. It is the fair way to rank choices, because raw win rates put the smallest samples on top.

Best Cards with Tanx's Whistle

The cards that gain the most from carrying Tanx's Whistle are Strike (+22.1%), Defend (+22.1%), and Bash (+16.2%), each shown with its win-rate swing.

Strike+22.1%19 runsDefend+22.1%19 runsBash+16.2%16 runsAscender's Bane+3.7%26 runsWhistle+0.9%53 runs

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

Tanx's Whistle Win Rate by Class

Of the 2 classes that carry Tanx's Whistle, it performs best with Ironclad (65.0%) and Silent (61.5%).

The Ironclad65.0%20 runsThe Silent61.5%13 runs

Tanx's Whistle Details

Carried in 0.5% of runs, Tanx's Whistle is an ancient relic typically acquired near floor 33.

Upon pickup, add 1 Whistle to your Deck.

What Ends Runs with Tanx's Whistle

Runs carrying Tanx's Whistle end most often against Aeonglass Boss (14.8%), Queen Boss (13.0%), and Test Subject Boss (9.3%) — the share of its runs each accounts for is shown.

• Aeonglass Boss14.8% of runs
• Queen Boss13.0% of runs
• Test Subject Boss9.3% of runs
• Knights Elite3.7% of runs
• Doormaker Boss3.7% of runs

See Also

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