Sourcemined
Elden Ring
BossAinsel RiverCaelidChanged in 1 patchVerified on build 25080141

Astel, Stars of Darkness

Fought in 2 places, from 11,170 HP to 18,617 HP at Caelid · Sellia Crystal Tunnel: each placement carries its own area scaling. It takes the most damage from Standard and the least from Magic.

Where you fight it 2

Each place uses its own copy of the boss with that area's scaling. HP and stance as you meet them (first phase, offline, no new game plus).

PlaceHPStanceScaling
Ainsel River · Astel, Naturalborn of the Void11,170120×4.125
Caelid · Sellia Crystal Tunnel18,617120×6.875

Damage negation

How much of each damage type it shrugs off. Lower is better for you; the type it takes most is highlighted.

Standard10%
Slash10%
Strike10%
Pierce10%
Magic40%
Fire40%
Lightning40%
Holy40%

Flat defense

Subtracted from each hit before negation; it matters most for weak hits. Area scaling raises it along with HP.

Ainsel River · Astel, Naturalborn of the Void

Physical114
Magic114
Fire114
Lightning114
Holy114

Caelid · Sellia Crystal Tunnel

Physical120
Magic120
Fire120
Lightning120
Holy120

Status buildup to proc

Buildup needed for the first proc, and how much more each following proc needs (it grows after every proc, up to the fifth).

Ainsel River · Astel, Naturalborn of the Void

Status1st proc2nd3rd4th
Poison5538431,3001,300
Scarlet Rot5538431,3001,300
Bleed5538431,3001,300
FrostImmune
SleepImmune
MadnessImmune
Death BlightImmune

Caelid · Sellia Crystal Tunnel

Status1st proc2nd3rd4th
Poison6018911,3481,348
Scarlet Rot6018911,3481,348
Bleed6018911,3481,348
FrostImmune
SleepImmune
MadnessImmune
Death BlightImmune

HP in each journey

At Caelid · Sellia Crystal Tunnel: new game plus multiplies HP, defense and resistances again on top of the area's scaling.

NGNG+1NG+2NG+3NG+4NG+5NG+6NG+7
18,61718,89620,78621,73122,67624,56525,51026,455

How its AI decides verified

  • Its attack choices change at 97%, 60% of its HP: some attacks unlock, get likelier or are forced below those points.
  • It picks attacks by how far you are, with cut-offs at 6 m, 10 m, 20 m, 40 m, 50 m.
  • It chooses among 30 attack routines.

Read from the game's AI script for this boss. Which animation each routine plays isn't named yet.

Kill-speed simulator New

How many hits Astel, Stars of Darkness takes with your weapon and stats, in any journey: damage per hit through its defense and negations, stance, and status procs as its thresholds grow.

Simulate Astel, Stars of Darkness

Patch history 1

Every patch that changed its numbers, read from the game's balance file (regulation) of each version.

  1. 1.02.1from 1.00
    • HP2,407→2,708
    • Standard negation20%→10%
    • Slash negation20%→10%
    • Strike negation20%→10%
    • Pierce negation20%→10%

Other bosses in Ainsel River