Fan of Knives•Power

Is Fan of Knives good in Slay the Spire 2?

Fan of Knives is a rare Silent power in Slay the Spire 2. In combat it resolves as: Shivs now hit ALL enemies. Add Shivs into your Hand. It ranks among the strongest cards its class can draft right now, earning a spot at B tier in our Slay the Spire 2 card tier list.

Across 277 recorded runs, decks running it win 33.5% of the time, comfortably clear of the 14.0% average, by 19.5%. It’s a more selective pick, turning up in just 2.4% of decks that could run it. Offer data is close to a wash — 43.1% of offers taken, 34.4% for runs that picked it against 34.2% for runs that skipped, a pick lift of just +0.2% over 215 decided runs. Silent players keep it in 9.4% of their runs, so it’s a familiar sight in those decks. On average it shows up 1.2 times in the decks that take it.

It performs best next to Reflex — together they post a +25.4% swing in win rate. It also has strong chemistry with the relic Miniature Cannon, which moves its win rate by +31.2%. At 2 energy, it’s upgraded in 31.8% of runs and usually joins the deck around floor 17.

That’s 92 wins, 183 deaths, and 2 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Test Subject Boss, which closes out 6.5% of its appearances. Read on for Fan of Knives’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Silent run.

Pick or Skip: Fan of Knives

Out of 540 recorded offers Fan of Knives is taken 43.1% of the time, and taking it is worth +0.2% in pick lift — 34.4% for runs that picked it against 34.2% for runs that skipped, across 215 decided runs.

Taken 233 times out of 540 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 Fan of Knives

Fan of Knives is strongest when it joins the deck in Act 2, where runs win 46.9% across 64 runs — one of 4 recorded pickup windows.

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

Best Cards to Pair with Fan of Knives

Ranked by win-rate lift, Fan of Knives performs best alongside Reflex (+25.4%), Adrenaline (+25.1%), and Storm of Steel (+24.1%).

Reflex+25.4%28 runsAdrenaline+25.1%48 runsStorm of Steel+24.1%36 runsKnife Trap+24.0%56 runsAbrasive+20.2%42 runsAfterimage+19.8%49 runs

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

Fan of Knives Win Rate by Class

Fan of Knives is drafted only by the Silent, where it holds a 33.2% win rate across 273 runs.

The Silentappears in 9.4% of its runs (273 tracked)

Best Relics for Fan of Knives

Fan of Knives pairs best with the relics Miniature Cannon (+31.2%), Fragrant Mushroom (+26.4%), and Centennial Puzzle (+25.5%), ranked by win-rate lift.

Miniature Cannon+31.2%24 runsFragrant Mushroom+26.4%19 runsCentennial Puzzle+25.5%56 runsLantern+24.6%45 runsStrike Dummy+23.8%51 runsWhite Star+23.4%18 runs

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

Fan of Knives Card Details

Fan of Knives is a rare power costing 2 energy; it’s upgraded in 31.8% of runs and usually picked up by floor 17.

Shivs now hit ALL enemies. Add Shivs into your Hand.

What Ends Runs with Fan of Knives

Fan of Knives’s most common run-enders are Test Subject Boss (6.5%), Aeonglass Boss (5.8%), and The Insatiable Boss (4.7%).

• Test Subject Boss6.5% of runs
• Aeonglass Boss5.8% of runs
• The Insatiable Boss4.7% of runs
• Queen Boss4.3% of runs
• Entomancer Elite4.3% of runs

See Also

Compare Fan of Knives with the rest of the best Slay the Spire 2 cards, relics, and classes below.