Legion of Bone Skill

Is Legion of Bone good in Slay the Spire 2?

In Slay the Spire 2, Legion of Bone is an uncommon skill from the Necrobinder card pool. Its effect: ALL players Summon 6. Right now it’s a premium pick that sits at B tier — one of the better cards you can add to a deck this run.

Over 118 tracked runs its win rate sits at 49.6%, 35.7% ahead of the 13.8% all-deck baseline. It sees niche play, included in only 0.6% of eligible runs. When it is actually offered players take it 22.9% of the time, and that looks correct: those runs win 44.7% against 34.3% for runs that passed, a +9.4% pick lift over 103 decided runs. Within Necrobinder runs it’s drafted 3.3% 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 Borrowed Time, which lifts its win rate by +22.7% when the two share a deck. On the relic side, Vajra is its standout companion, worth a +24.5% win-rate swing alongside it. It costs 2 energy, gets upgraded 41.3% of the time, and tends to be picked up near floor 16.

Upgrading the card adds +2 Summon to its stat line. Of the runs that drafted it, 58 ended in victory against 59 deaths and 1 abandons. Its most common run-ender is Test Subject Boss, finishing 9.3% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Legion of Bone fits a Necrobinder deck.

Pick or Skip: Legion of Bone

Players take Legion of Bone in 22.9% of the 488 offers it appears in; those runs win 44.7% against 34.3% for runs that passed, a pick lift of +9.4% over 103 decided runs.

Taken 112 times out of 488 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 Legion of Bone

Of the 3 pickup windows recorded for Legion of Bone, Act 3 is the best: 73.7% across 19 runs.

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

Best Cards to Pair with Legion of Bone

Legion of Bone’s strongest card pairings so far are Borrowed Time (+22.7%), Debilitate (+17.9%), and Sentry Mode (+15.7%), each shown with the win-rate lift it adds.

Borrowed Time+22.7%20 runsDebilitate+17.9%27 runsSentry Mode+15.7%16 runsNecro Mastery+14.2%26 runsNeurosurge+12.3%19 runsReanimate+11.8%16 runs

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

Legion of Bone Win Rate by Class

Exclusive to the Necrobinder, Legion of Bone posts a 49.6% win rate over 118 tracked runs.

The Necrobinderappears in 3.3% of its runs (118 tracked)

Best Relics for Legion of Bone

The relics that swing Legion of Bone’s win rate the most are Vajra (+24.5%), Akabeko (+20.6%), and Happy Flower (+20.0%), with each lift shown.

Vajra+24.5%21 runsAkabeko+20.6%17 runsHappy Flower+20.0%23 runsOddly Smooth Stone+15.2%27 runsVenerable Tea Set+15.0%24 runsBag of Marbles+14.8%21 runs

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

Legion of Bone Card Details

A 2-energy uncommon skill, Legion of Bone is upgraded 41.3% of the time and tends to enter the deck around floor 16.

ALL players Summon 6.

Upgrade: +2 Summon

What Ends Runs with Legion of Bone

Runs holding Legion of Bone end most often against Test Subject Boss (9.3%), Aeonglass Boss (5.9%), and Decimillipede Elite (4.2%) — the share of its runs each accounts for is shown.

• Test Subject Boss9.3% of runs
• Aeonglass Boss5.9% of runs
• Decimillipede Elite4.2% of runs
• Queen Boss4.2% of runs
• Kaiser Crab Boss3.4% of runs

See Also

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