Neutron Aegis•Power

Is Neutron Aegis good in Slay the Spire 2?

In Slay the Spire 2, Neutron Aegis is a rare power from the Regent card pool. Its effect: Gain 8 Plating. Performance-wise it’s a solid if unspectacular include, rated C tier overall.

Over 35 tracked runs its win rate sits at 31.0%, 12.1% ahead of the 19.0% all-deck baseline. It sees niche play, included in only 0.9% of eligible runs. Within Regent runs it’s drafted 4.8% 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 Child of the Stars, which lifts its win rate by +24.5% when the two share a deck. On the relic side, Oddly Smooth Stone is its standout companion, worth a +16.3% win-rate swing alongside it. It costs 1 energy, gets upgraded 29.7% of the time, and tends to be picked up near floor 18.

Of the runs that drafted it, 9 ended in victory against 20 deaths and 6 abandons. Its most common run-ender is Entomancer Elite, finishing 8.6% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Neutron Aegis fits a Regent deck.

Best Cards to Pair with Neutron Aegis

Neutron Aegis’s strongest card pairings so far are Child of the Stars (+24.5%), Convergence (+16.3%), and Heirloom Hammer (+15.9%), each shown with the win-rate lift it adds.

Child of the Stars+24.5%12 runsConvergence+16.3%7 runsHeirloom Hammer+15.9%3 runsStardust+14.0%9 runsBig Bang+13.4%6 runsArsenal+12.6%4 runs

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

Neutron Aegis Win Rate by Class

Of the 3 classes that draft Neutron Aegis, it performs best with Regent (32.1%), Defect (0.0%), and Ironclad (0.0%).

The Regent32.1%33 runsThe Defect0.0%1 runsThe Ironclad0.0%1 runs

Best Relics for Neutron Aegis

The relics that swing Neutron Aegis’s win rate the most are Oddly Smooth Stone (+16.3%), Mercury Hourglass (+15.9%), and Horn Cleat (+15.9%), with each lift shown.

Oddly Smooth Stone+16.3%6 runsMercury Hourglass+15.9%3 runsHorn Cleat+15.9%3 runsLantern+13.4%6 runsBag of Marbles+12.6%4 runsGorget+12.6%5 runs

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

Neutron Aegis Card Details

A 1-energy rare power, Neutron Aegis is upgraded 29.7% of the time and tends to enter the deck around floor 18.

Gain 8 Plating.

What Ends Runs with Neutron Aegis

Runs holding Neutron Aegis end most often against Entomancer Elite (8.6%), The Insatiable Boss (5.7%), and Queen Boss (5.7%) — the share of its runs each accounts for is shown.

• Entomancer Elite8.6% of runs
• The Insatiable Boss5.7% of runs
• Queen Boss5.7% of runs

See Also

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