Sourcemined
Elden Ring
MapsReleasesSupport
BossJagged PeakVerified on build 25827938

Ancient Dragon Senessax

45,551 HP at Jagged Peak · Jagged Peak Summit, with the area's scaling applied. It takes the most damage from Pierce and the least from Lightning.

Show on the map →

HP (NG)
45,551
HP in NG+7
67,042
Stance
120
Weakest to
Pierce 10%
Resists most
Lightning 80%
Nearest grace
Jagged Peak Summit
Ancient Dragon Senessax, rendered from the game's 3D model
Rendered from the game's model

How Ancient Dragon Senessax fights

At Jagged Peak · Jagged Peak Summit, its toughest placement: 45,551 HP.

Phases by HP verified

85%60%
  • Its script checks its HP at 85%, 60% when it chooses what to do.

Attacks partly traced

The attacks it picks on its own, most used first. Damage is the attack power of its strongest hit at this placement, before your defense and negation.

AttackParryBlockDamage
2-hit combo + 5 projectiles7 hits · first hit after 1.6 sNoYes1,226physical
2-hit combo2 hits · first hit after 1.9 sNoYes881physical
2 projectiles (1)2 hits · first hit after 3.7 sNoYes1,226fire
Single hit + projectile (1)2 hits · first hit after 2.1 sNoYes1,436862 physical · 574 lightning
Single hit + 4 projectiles (1)5 hits · first hit after 1.9 sNoYes881physical
Single hit + projectile (2)2 hits · first hit after 1.8 sNoYes1,226physical
Single hit (1)1 hit · first hit after 4.9 sNoYes1,226physical
Single hit (2)1 hit · first hit after 2.8 sNoYes1,226physical
Single hit (3)1 hit · first hit after 3.8 sNoYes1,226physical
Single hit (4)1 hit · first hit after 1.1 sNoYes881physical
Single hit + 2 projectiles3 hits · first hit after 4.8 sNoYes1,302lightning
Projectile (1)1 hit · first hit after 3.2 sNoYes1,226fire
Projectile (2)1 hit · first hit after 5.0 sNoYes1,226fire
2 projectiles (2)2 hits · first hit after 1.3 sNoYes881lightning
2 projectiles (3)2 hits · first hit after 1.7 sNoYes881lightning
Single hit + projectile (3)2 hits · first hit after 1.9 sNoYes1,034physical
Single hit + 5 projectiles (1)6 hits · first hit after 1.7 sNoYes1,034physical
Single hit + 4 projectiles (2)5 hits · first hit after 1.3 sNoYes881physical
Single hit (5)1 hit · first hit after 2.0 sNoYes1,034physical
Single hit (6)1 hit · first hit after 5.9 sNoYes1,379lightning
Projectile (3)1 hit · first hit after 2.9 sNoYes689lightning
9 more attacks it chains after another one
AttackParryBlockDamage
Single hit + 5 projectiles (2)6 hits · first hit after 1.3 s · after 2-hit combo + 5 projectiles and Single hit + 4 projectiles (1) or 2 moreNoYes881physical
Single hit + projectile (4)2 hits · first hit after 5.4 s · after 2 projectiles (2)NoYes1,302lightning
Single hit + projectile (5)2 hits · first hit after 6.0 s · after 2 projectiles (2)NoYes1,379lightning
Single hit + projectile (6)2 hits · first hit after 1.2 sNoYes1,302lightning
Single hit + projectile (7)2 hits · first hit after 1.5 sNoYes1,302lightning
Single hit + projectile (8)2 hits · first hit after 1.8 s · after Single hit + projectile (4)NoYes1,302lightning
Single hit + projectile (9)2 hits · first hit after 1.6 s · after Single hit + projectile (4)NoYes1,302lightning
Single hit + projectile (10)2 hits · first hit after 2.4 s · after Single hit + projectile (4)NoYes1,302lightning
Single hit + 4 projectiles (3)5 hits · first hit after 1.3 s · after Single hit + projectile (3)NoYes881physical

Parry: whether a parry works on it (for combos, which hits). Block: whether a shield stops it; grabs go through. Its script also names 2 animations its model's files don't have; they aren't listed.

Attack choice by distance from its battle script

How often it opens with each attack at each range, from its main weight tables (it switches between 2 sets of tables by state; the main one is shown).

  • 2-hit combo + 5 projectiles
  • 2-hit combo
  • 2 projectiles (1)
  • Other attacks and moves
Show as a table
DistanceMost likely picks
under 5 m2-hit combo + 5 projectiles 50% · 2-hit combo 33% · 2 projectiles (1) 17%
5–15 m2-hit combo + 5 projectiles 50% · 2-hit combo 33% · 2 projectiles (1) 17%
Attacks
30
With a cooldown
13 5–60 s
Walk in before attacking
11 from up to 20 m

What hurts it most

  1. Pierce10% +38%
  2. Standard35%
  3. Slash35% ±0
  4. Strike35% ±0
  5. Magic40% −8%
  6. Fire40% −8%
  7. Holy40% −8%
  8. Lightning80% −69%

Negation (lower lets more through), and how much more or less damage that type deals than Standard does.

Status procs to kill it

Status1st procHP per procProcs to kill
Bleed7346,93379,163 buildup
Frost7344,5851013,606 buildup
Poison7343,5001419,530 buildup
Scarlet Rot7348,72967,682 buildup

From full HP with that status alone; thresholds grow after each proc. Frostbite's extra 20% damage taken isn't counted.

Weapons that hit it hardest

Attack rating that gets through its negations at max upgrade with every stat at 50, best affinity per weapon (flat defense left out). Try your own build in the build planner →

  1. Fallingstar Beast JawStandard731 of 901 AR
  2. Anvil HammerStandard663 of 1,041 AR
  3. Rusted AnchorQuality622 of 690 AR
  4. Bloodfiend's ArmSacred613 of 977 AR
  5. PickaxeOccult605 of 672 AR
  6. Royal GreatswordStandard599 of 961 AR

Attacks, their hits, parry and block, grabs and damage are read from the boss's animation events and attack data; when it picks them, from its battle script. Attack names follow the names players commonly use; the rest are described from their hits.

Video: Ancient Dragon Senessax

Ancient Dragon Senessax Fight · Meta Game Guides · Watch on YouTube

Where you fight it 1

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
Jagged Peak · Jagged Peak Summit45,551120×14.563

Damage negation

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

Standard35%
Slash35%
Strike35%
Pierce10%
Magic40%
Fire40%
Lightning80%
Holy40%

Flat defense

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

Physical125
Magic125
Fire125
Lightning125
Holy125

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).

Status1st proc2nd3rd4th
Poison7341,0241,4811,481
Scarlet Rot7341,0241,4811,481
Bleed7341,0241,4811,481
Frost7341,0241,4811,481
SleepImmune
MadnessImmune
Death BlightImmune

HP in each journey

At Jagged Peak · Jagged Peak Summit: new game plus multiplies HP, defense and resistances again on top of the area's scaling.

NGNG+1NG+2NG+3NG+4NG+5NG+6NG+7
45,55147,88752,67655,07057,46462,25364,64867,042

Kill-speed simulator New

How many hits Ancient Dragon Senessax 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 Ancient Dragon Senessax

Other bosses in Jagged Peak

Bosses with similar HP