Should I upgrade Lunar Blast in Slay the Spire 2?

Compare the upgraded text: Deal 5 damage for each Skill already played this turn.. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.

What builds use Lunar Blast?

Lunar Blast appears in 1 tracked build: Royal Decree (B-tier, hero card).

What character uses Lunar Blast?

Lunar Blast is tagged as a Regent card. See the Regent build hub for archetypes that care about it.

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

Lunar Blast

Regent · Attack · Uncommon · 0 cost

Base

Upgraded

Card text

Deal 4 damage for each Skill already played this turn.

Lunar Blast+

Deal 5 damage for each Skill already played this turn.

Builds that use Lunar Blast

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

BRoyal DecreeRegent · Hero card

Build context

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

Related cards

Lunar Blast FAQ

Should I upgrade Lunar Blast in Slay the Spire 2?: Compare the upgraded text: Deal 5 damage for each Skill already played this turn.. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.
What builds use Lunar Blast?: Lunar Blast appears in 1 tracked build: Royal Decree (B-tier, hero card).
What character uses Lunar Blast?: Lunar Blast 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.