SpireForge

Updated for Data 2026-03-17Early Access — numbers may shift with patches.

Neutron Aegis

Regent · Power · Rare · 1 cost

Base

Neutron Aegis

Upgraded

Neutron Aegis+

Card text

Gain 8 Plating.

Neutron Aegis+

Gain 11 Plating.

Builds that use Neutron Aegis

Archetypes that draft this card in real runs, with the role it plays.

Keywords

Plating

Build context

See the Regent build hub for archetypes that feature this card in real runs.

Related cards

Arsenal
Black Hole
Child of the Stars
Furnace
Genesis
Hammer Time
Orbit
Pale Blue Dot

Neutron Aegis FAQ

Should I upgrade Neutron Aegis in Slay the Spire 2?
Compare the upgraded text: Gain 11 Plating.. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.
What builds use Neutron Aegis?
Neutron Aegis appears in 2 tracked builds: The King's Smith (S-tier, flex pick), Iron Crown (B-tier, flex pick).
What character uses Neutron Aegis?
Neutron Aegis is tagged as a Regent card. See the Regent build hub for archetypes that care about it.

Patch history

SpireForge snapshots card text from Untapped exports dated 2026-03-17. When Mega Crit ships a balance patch, we re-run the scraper and refresh every affected URL—see /patches for the editorial log.