Up My Sleeve•Skill

Is Up My Sleeve good in Slay the Spire 2?

In Slay the Spire 2, Up My Sleeve is an uncommon skill from the Silent card pool. Its effect: Add Shivs into your Hand. Reduce this card's cost by 1. Performance-wise it’s a solid if unspectacular include, rated C tier overall.

Over 353 tracked runs its win rate sits at 27.0%, 13.0% ahead of the 13.9% all-deck baseline. It sees niche play, included in only 3.0% of eligible runs. When it is actually offered players take it 29.7% of the time, and that looks correct: those runs win 25.9% against 23.7% for runs that passed, a +2.1% pick lift over 293 decided runs. Within Silent runs it’s drafted 12.0% of the time, making it a regular part of that class’s decks. Decks that include it run about 1.2 copies on average.

Its standout pairing so far is Mad Science, which lifts its win rate by +30.4% when the two share a deck. On the relic side, Tingsha is its standout companion, worth a +38.7% win-rate swing alongside it. It costs 2 energy, gets upgraded 34.5% of the time, and tends to be picked up near floor 16.

Upgrading the card adds +1 Cards to its stat line. Of the runs that drafted it, 95 ended in victory against 257 deaths and 1 abandons. Its most common run-ender is Test Subject Boss, finishing 6.2% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Up My Sleeve fits a Silent deck.

Pick or Skip: Up My Sleeve

Players take Up My Sleeve in 29.7% of the 1072 offers it appears in; those runs win 25.9% against 23.7% for runs that passed, a pick lift of +2.1% over 293 decided runs.

Taken 318 times out of 1072 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.

When to Pick Up Up My Sleeve

Of the 4 pickup windows recorded for Up My Sleeve, Act 3 is the best: 56.3% across 48 runs.

Win rate of runs by the act Up My Sleeve entered the deck. Acts that have not reached the sample floor show their run count only.

Best Cards to Pair with Up My Sleeve

Up My Sleeve’s strongest card pairings so far are Mad Science (+30.4%), Reflex (+24.3%), and Panache (+23.7%), each shown with the win-rate lift it adds.

Mad Science+30.4%33 runsReflex+24.3%44 runsPanache+23.7%19 runsFlanking+22.1%24 runsWell-Laid Plans+19.8%30 runsTactician+18.3%60 runs

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

Up My Sleeve Win Rate by Class

Exclusive to the Silent, Up My Sleeve posts a 27.3% win rate over 349 tracked runs.

The Silentappears in 12.0% of its runs (349 tracked)

Best Relics for Up My Sleeve

The relics that swing Up My Sleeve’s win rate the most are Tingsha (+38.7%), War Paint (+25.8%), and Cloak Clasp (+25.5%), with each lift shown.

Tingsha+38.7%20 runsWar Paint+25.8%52 runsCloak Clasp+25.5%18 runsPotion Belt+24.9%53 runsKusarigama+24.5%38 runsFragrant Mushroom+23.8%15 runs

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

Up My Sleeve Card Details

A 2-energy uncommon skill, Up My Sleeve is upgraded 34.5% of the time and tends to enter the deck around floor 16.

Add Shivs into your Hand. Reduce this card's cost by 1.

Upgrade: +1 Cards

What Ends Runs with Up My Sleeve

Runs holding Up My Sleeve end most often against Test Subject Boss (6.2%), Knowledge Demon Boss (5.4%), and The Insatiable Boss (5.1%) — the share of its runs each accounts for is shown.

• Test Subject Boss6.2% of runs
• Knowledge Demon Boss5.4% of runs
• The Insatiable Boss5.1% of runs
• Entomancer Elite4.8% of runs
• Queen Boss4.0% of runs

See Also

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