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. The data marks it as a weaker relic, settling at D tier — rarely a run-defining grab.

Over 1146 tracked runs the win rate of decks holding it sits at 38.3%, 24.0% ahead of the 14.3% all-run baseline. It sees lighter play, carried in only 4.2% of runs. It does its best work in the hands of the Silent, who post a 45.1% win rate with it. Within Silent runs specifically, it’s carried 4.6% of the time.

Its standout card pairing is Sneaky, which lifts the relic’s win rate by +41.7% when both are in play. It also works nicely with Alchemize, good for a +37.9% 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, 436 ended in victory while 702 fell to a defeat. Its most common run-ender is Queen Boss, finishing 5.0% 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.

Pick or Skip: Tiny Mailbox

Players take Tiny Mailbox in 60.0% of the 1956 offers it appears in; those runs win 38.3% against 33.8% for runs that passed, a pick lift of +4.5% over 1162 decided runs.

Taken 1174 times out of 1956 offers.

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 Tiny Mailbox

The cards that gain the most from carrying Tiny Mailbox are Sneaky (+41.7%), Alchemize (+37.9%), and Prolong (+36.7%), each shown with its win-rate swing.

Sneaky+41.7%15 runsAlchemize+37.9%22 runsProlong+36.7%17 runsMaster of Strategy+36.7%25 runsSpeedster+35.6%24 runsEternal Armor+33.9%19 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 Silent (45.1%), Necrobinder (43.3%), and Regent (36.6%).

The Silent45.1%270 runsThe Necrobinder43.3%187 runsThe Regent36.6%207 runsThe Defect34.6%234 runsThe Ironclad31.3%237 runs

Tiny Mailbox Details

Carried in 4.2% of runs, Tiny Mailbox is an uncommon relic typically acquired near floor 21.

Whenever you Rest, procure 2 random potions.

What Ends Runs with Tiny Mailbox

Runs carrying Tiny Mailbox end most often against Queen Boss (5.0%), Test Subject Boss (4.9%), and Aeonglass Boss (4.5%) — the share of its runs each accounts for is shown.

• Queen Boss5.0% of runs
• Test Subject Boss4.9% of runs
• Aeonglass Boss4.5% of runs
• Kaiser Crab Boss3.8% of runs
• Knowledge Demon Boss3.1% of runs

See Also

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