Tiny Mailbox•Relic

Is Tiny Mailbox good in Slay the Spire 2?

In Slay the Spire 2, Tiny Mailbox is an uncommon relic you can pick up on your climb. Its effect: Whenever you Rest, procure 2 random potions. Performance-wise it’s a steady, unspectacular pick rated C tier overall.

Over 158 tracked runs the win rate of decks holding it sits at 45.2%, 26.3% ahead of the 18.9% all-run baseline. It sees lighter play, carried in only 4.2% of runs. It does its best work in the hands of the Necrobinder, who post a 52.8% win rate with it. Within Necrobinder runs specifically, it’s carried 4.5% of the time.

Its standout card pairing is Spoils of Battle, which lifts the relic’s win rate by +54.8% when both are in play. It also works nicely with Cloak of Stars, good for a +54.8% win-rate change. It typically enters the deck near floor 22. As an uncommon relic, how often it’s offered depends on its rarity tier.

Of the runs that carried it, 66 ended in victory while 80 fell to a defeat. Its most common run-ender is Test Subject Boss, finishing 6.3% of the runs it appears in. See the best cards, class split, and threats below for the full read on whether Tiny Mailbox is worth grabbing.

Best Cards with Tiny Mailbox

The cards that gain the most from carrying Tiny Mailbox are Spoils of Battle (+54.8%), Cloak of Stars (+54.8%), and Eternal Armor (+54.8%), each shown with its win-rate swing.

Spoils of Battle+54.8%3 runsCloak of Stars+54.8%7 runsEternal Armor+54.8%3 runsFetch+54.8%5 runsBury+54.8%4 runsFeral+54.8%5 runs

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

Tiny Mailbox Win Rate by Class

Of the 5 classes that carry Tiny Mailbox, it performs best with Necrobinder (52.8%), Ironclad (50.0%), and Defect (45.2%).

The Necrobinder52.8%37 runsThe Ironclad50.0%22 runsThe Defect45.2%32 runsThe Silent44.1%38 runsThe Regent32.0%29 runs

Tiny Mailbox Details

Carried in 4.2% of runs, Tiny Mailbox is an uncommon relic typically acquired near floor 22.

Whenever you Rest, procure 2 random potions.

What Ends Runs with Tiny Mailbox

Runs carrying Tiny Mailbox end most often against Test Subject Boss (6.3%), Queen Boss (3.8%), and Infested Prisms Elite (3.2%) — the share of its runs each accounts for is shown.

• Test Subject Boss6.3% of runs
• Queen Boss3.8% of runs
• Infested Prisms Elite3.2% of runs
• The Insatiable Boss3.2% of runs
• Entomancer Elite3.2% of runs

See Also

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