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 222 tracked runs its win rate sits at 35.5%, 21.2% ahead of the 14.3% all-deck baseline. It sees niche play, included in only 0.8% of eligible runs. Taken 20.3% of the times it is offered, it lands close to neutral on the pick-versus-skip split: 35.7% for runs that took it against 36.8% for runs that passed, a -1.1% pick lift over 171 decided runs. Within Regent runs it’s drafted 4.7% 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 Sword Sage, which lifts its win rate by +31.9% when the two share a deck. On the relic side, Eternal Feather is its standout companion, worth a +30.9% win-rate swing alongside it. It costs 1 energy, gets upgraded 24.8% of the time, and tends to be picked up near floor 18.

Of the runs that drafted it, 78 ended in victory against 142 deaths and 2 abandons. Its most common run-ender is Queen Boss, finishing 5.9% 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.

Pick or Skip: Neutron Aegis

Players take Neutron Aegis in 20.3% of the 867 offers it appears in; those runs win 35.7% against 36.8% for runs that passed, a pick lift of -1.1% over 171 decided runs.

Taken 176 times out of 867 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 Neutron Aegis

Of the 4 pickup windows recorded for Neutron Aegis, Act 3 is the best: 80.0% across 20 runs.

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

Best Cards to Pair with Neutron Aegis

Neutron Aegis’s strongest card pairings so far are Sword Sage (+31.9%), Void Form (+24.4%), and Decisions, Decisions (+24.4%), each shown with the win-rate lift it adds.

Sword Sage+31.9%22 runsVoid Form+24.4%37 runsDecisions, Decisions+24.4%31 runsThe Smith+24.4%31 runsBombardment+23.3%26 runsSeven Stars+22.8%28 runs

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

Neutron Aegis Win Rate by Class

Exclusive to the Regent, Neutron Aegis posts a 35.9% win rate over 219 tracked runs.

The Regentappears in 4.7% of its runs (219 tracked)

Best Relics for Neutron Aegis

The relics that swing Neutron Aegis’s win rate the most are Eternal Feather (+30.9%), Orichalcum (+27.2%), and Gorget (+26.1%), with each lift shown.

Eternal Feather+30.9%24 runsOrichalcum+27.2%18 runsGorget+26.1%38 runsVenerable Tea Set+25.6%40 runsHorn Cleat+25.5%27 runsPantograph+25.0%24 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 24.8% 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 Queen Boss (5.9%), The Insatiable Boss (4.5%), and Knowledge Demon Boss (3.6%) — the share of its runs each accounts for is shown.

• Queen Boss5.9% of runs
• The Insatiable Boss4.5% of runs
• Knowledge Demon Boss3.6% of runs
• Decimillipede Elite3.6% of runs
• Entomancer Elite3.2% of runs

See Also

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