Sourcemined
Elden Ring
BossCaelidMt. GelmirChanged in 1 patchVerified on build 25080141

Magma Wyrm

Fought in 4 places, from 7,141 HP to 25,552 HP at Gravesite Plain · Dragon's Pit Terminus: each placement carries its own area scaling. It takes the most damage from Standard and the least from Fire.

Where you fight it 4

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
Caelid · Rear Gael Tunnel Entrance7,141120×2.406
Mt. Gelmir · Seethewater Terminus12,243120×4.125
Volcano Manor · Temple of Eiglay12,243120×4.125
Gravesite Plain · Dragon's Pit Terminus25,552120×8.609

Damage negation

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

Caelid · Rear Gael Tunnel Entrance, Gravesite Plain · Dragon's Pit Terminus

Standard10%
Slash35%
Strike10%
Pierce10%
Magic40%
Fire80%
Lightning40%
Holy40%

Mt. Gelmir · Seethewater Terminus, Volcano Manor · Temple of Eiglay

Standard10%
Slash35%
Strike10%
Pierce10%
Magic40%
Fire100%
Lightning40%
Holy40%

Flat defense

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

Caelid · Rear Gael Tunnel Entrance

Physical109
Magic109
Fire109
Lightning109
Holy109

Mt. Gelmir · Seethewater Terminus, Volcano Manor · Temple of Eiglay

Physical114
Magic114
Fire114
Lightning114
Holy114

Gravesite Plain · Dragon's Pit Terminus

Physical122
Magic122
Fire122
Lightning122
Holy122

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).

Caelid · Rear Gael Tunnel Entrance

Status1st proc2nd3rd4th
Poison5358251,2821,282
Scarlet Rot5358251,2821,282
Bleed5358251,2821,282
Frost1,1511,6081,6081,608
Sleep238280378668
MadnessImmune
Death BlightImmune

Mt. Gelmir · Seethewater Terminus, Volcano Manor · Temple of Eiglay

Status1st proc2nd3rd4th
Poison5538431,3001,300
Scarlet Rot5538431,3001,300
Bleed5538431,3001,300
Frost1,1891,6461,6461,646
Sleep246288386676
MadnessImmune
Death BlightImmune

Gravesite Plain · Dragon's Pit Terminus

Status1st proc2nd3rd4th
Poison6499391,3961,396
Scarlet Rot6499391,3961,396
Bleed6499391,3961,396
Frost1,3951,8521,8521,852
Sleep288330428718
MadnessImmune
Death BlightImmune

HP in each journey

At Gravesite Plain · Dragon's Pit Terminus: new game plus multiplies HP, defense and resistances again on top of the area's scaling.

NGNG+1NG+2NG+3NG+4NG+5NG+6NG+7
25,55243,65248,01750,20052,38256,74858,93061,113

How its AI decides verified

  • It picks attacks by how far you are, with cut-offs at 4 m, 8 m.
  • It chooses among 36 attack routines; 12 have a cooldown (5–25 s).

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 Magma Wyrm 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 Magma Wyrm

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
    • HP1,978→2,968
    • Standard negation40%→10%
    • Slash negation40%→35%
    • Strike negation40%→10%
    • Pierce negation20%→10%
    • Runes3,880→5,044

Other bosses in Caelid