Expertise Skill

Is Expertise good in Slay the Spire 2?

In Slay the Spire 2, Expertise is an uncommon skill from the Silent card pool. Its effect: Draw cards until you have in your Hand. Performance-wise it’s a solid if unspectacular include, rated C tier overall.

Over 367 tracked runs its win rate sits at 32.5%, 18.2% ahead of the 14.3% all-deck baseline. It sees niche play, included in only 1.4% of eligible runs. When it is actually offered players take it 12.7% of the time, and that looks correct: those runs win 31.2% against 27.2% for runs that passed, a +3.8% pick lift over 292 decided runs. Within Silent runs it’s drafted 6.0% of the time, making it a regular part of that class’s decks. Decks that include it run about 1.1 copies on average.

Its standout pairing so far is Knife Trap, which lifts its win rate by +25.8% when the two share a deck. On the relic side, Vambrace is its standout companion, worth a +28.9% win-rate swing alongside it. It costs 1 energy, gets upgraded 27.4% of the time, and tends to be picked up near floor 18.

Upgrading the card adds +1 Cards to its stat line. Of the runs that drafted it, 119 ended in victory against 247 deaths and 1 abandons. Its most common run-ender is Knowledge Demon Boss, finishing 5.2% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Expertise fits a Silent deck.

Pick or Skip: Expertise

Players take Expertise in 12.7% of the 2349 offers it appears in; those runs win 31.2% against 27.2% for runs that passed, a pick lift of +3.8% over 292 decided runs.

Taken 298 times out of 2349 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 Expertise

Of the 4 pickup windows recorded for Expertise, Act 3 is the best: 65.7% across 67 runs.

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

Best Cards to Pair with Expertise

Expertise’s strongest card pairings so far are Knife Trap (+25.8%), Adrenaline (+20.5%), and Shadow Step (+20.1%), each shown with the win-rate lift it adds.

Knife Trap+25.8%47 runsAdrenaline+20.5%64 runsShadow Step+20.1%19 runsReflex+19.0%39 runsAfterimage+18.6%57 runsFlanking+18.5%16 runs

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

Expertise Win Rate by Class

Exclusive to the Silent, Expertise posts a 32.4% win rate over 353 tracked runs.

The Silentappears in 6.0% of its runs (353 tracked)

Best Relics for Expertise

The relics that swing Expertise’s win rate the most are Vambrace (+28.9%), Forgotten Soul (+28.5%), and Tiny Mailbox (+26.4%), with each lift shown.

Vambrace+28.9%23 runsForgotten Soul+28.5%15 runsTiny Mailbox+26.4%21 runsHorn Cleat+25.8%35 runsMummified Hand+25.5%18 runsLasting Candy+24.5%22 runs

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

Expertise Card Details

A 1-energy uncommon skill, Expertise is upgraded 27.4% of the time and tends to enter the deck around floor 18.

Draw cards until you have in your Hand.

Upgrade: +1 Cards

What Ends Runs with Expertise

Runs holding Expertise end most often against Knowledge Demon Boss (5.2%), Test Subject Boss (5.2%), and Queen Boss (4.9%) — the share of its runs each accounts for is shown.

• Knowledge Demon Boss5.2% of runs
• Test Subject Boss5.2% of runs
• Queen Boss4.9% of runs
• Soul Fysh Boss3.8% of runs
• Aeonglass Boss3.8% of runs

See Also

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