Phantom Blades
Win Rate
30.1%
Pick Rate
2.9%
Δ vs Avg
+16.2

Phantom BladesPower

Uncommon
TypePower
RarityUncommon
Cost1
ClassSilent
MethodologyData Methodology

Shivs gain Retain. The first Shiv you play each turn deals 9 additional damage.

Is Phantom Blades good in Slay the Spire 2?

In Slay the Spire 2, Phantom Blades is an uncommon power from the Silent card pool. Its effect: Shivs gain Retain. The first Shiv you play each turn deals 9 additional damage. Performance-wise it’s a solid if unspectacular include, rated C tier overall.

Over 336 tracked runs its win rate sits at 30.1%, 16.2% ahead of the 13.9% all-deck baseline. It sees niche play, included in only 2.9% of eligible runs. Taken 25.9% of the times it is offered, it lands close to neutral on the pick-versus-skip split: 29.9% for runs that took it against 30.1% for runs that passed, a -0.2% pick lift over 244 decided runs. Within Silent runs it’s drafted 11.5% 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 Corrosive Wave, which lifts its win rate by +29.9% when the two share a deck. On the relic side, Miniature Cannon is its standout companion, worth a +32.4% win-rate swing alongside it. It costs 1 energy, gets upgraded 29.8% of the time, and tends to be picked up near floor 15.

Of the runs that drafted it, 101 ended in victory against 234 deaths and 1 abandons. Its most common run-ender is Aeonglass Boss, finishing 5.4% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Phantom Blades fits a Silent deck.

Phantom Blades Win Rate & Pick Rate

At a 30.1% win rate, Phantom Blades runs 16.2% ahead of the 13.9% all-deck baseline — the bars below put the two side by side.

Win rate30.1%
Average deck13.9%
+16.2% vs averagePick rate: 2.9%336 runs

Run Outcomes with Phantom Blades

Across the 336 tracked runs that drafted Phantom Blades, 101 ended in a win and 235 in a loss — a 30.1% win share, counting abandons as losses.

  • Wins 30.1%
  • Losses 69.9%

Pick or Skip: Phantom Blades

Players take Phantom Blades in 25.9% of the 1064 offers it appears in; those runs win 29.9% against 30.1% for runs that passed, a pick lift of -0.2% over 244 decided runs.

Pick rate when offered25.9%1064 offers

Taken 275 times out of 1064 offers.

Win rate when picked29.9%244 runs
Win rate when skipped30.1%485 runs
-0.2% vs skippingPick lift: -0.2%Sample OK

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 Phantom Blades

Of the 4 pickup windows recorded for Phantom Blades, Act 3 is the best: 58.3% across 25 runs.

Starting deckNot enough data—5 runs
Act 119.3%187 runs
Act 242.0%119 runs
Act 358.3%25 runs

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

Best Cards to Pair with Phantom Blades

Phantom Blades’s strongest card pairings so far are Corrosive Wave (+29.9%), Malaise (+25.9%), and Mad Science (+23.6%), each shown with the win-rate lift it adds.

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

Phantom Blades Win Rate by Class

Exclusive to the Silent, Phantom Blades posts a 29.9% win rate over 335 tracked runs.

The SilentThe Silentappears in 11.5% of its runs (335 tracked)

Best Relics for Phantom Blades

The relics that swing Phantom Blades’s win rate the most are Miniature Cannon (+32.4%), Kunai (+28.0%), and Tingsha (+26.6%), with each lift shown.

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

Phantom Blades Card Details

A 1-energy uncommon power, Phantom Blades is upgraded 29.8% of the time and tends to enter the deck around floor 15.

Shivs gain Retain. The first Shiv you play each turn deals 9 additional damage.

Cost1
TypePower
RarityUncommon
ClassSilent
Avg copies / deck1.2
Upgraded29.8%
Typical pickup floor15

What Ends Runs with Phantom Blades

Runs holding Phantom Blades end most often against Aeonglass Boss (5.4%), Test Subject Boss (5.4%), and Kaiser Crab Boss (5.4%) — the share of its runs each accounts for is shown.

  • Aeonglass Boss5.4% of runs
  • Test Subject Boss5.4% of runs
  • Kaiser Crab Boss5.4% of runs
  • Queen Boss4.8% of runs
  • Knowledge Demon Boss3.9% of runs
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Phantom Blades – Frequently Asked Questions

Is Phantom Blades good in Slay the Spire 2?

Across 336 tracked runs, Phantom Blades has a 30.1% win rate — +16.2% above the average deck. Win rate reflects how often runs that include the card end in victory.

What does Phantom Blades do in Slay the Spire 2?

Phantom Blades costs 1 energy. Shivs gain Retain. The first Shiv you play each turn deals 9 additional damage.

What class is Phantom Blades in Slay the Spire 2?

Phantom Blades is an Uncommon Silent Power.

Is Phantom Blades worth upgrading in Slay the Spire 2?

Phantom Blades can be upgraded at a rest site to improve its effect.

What is the best relic for Phantom Blades?

In tracked runs, Phantom Blades has performed best alongside Miniature Cannon, which lifts its win rate by +32.4% over 23 runs together.

Should I take Phantom Blades when it is offered?

Players take Phantom Blades in 25.9% of its 1064 recorded offers. Runs that picked it win 29.9% (244 decided runs) against 30.1% for runs that skipped it (485 decided runs) — a -0.2% difference, and a -0.2% pick lift once sample size is accounted for.

See Also

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