Last updated Aug 1, 2026

Matriarch Arachna

Two boss forms across three health phases. Poison, cobweb block traps, minion swarms, and a Leader final stand.

The encounter has two boss entities. The Leader (MATRIARCH_ARACHNA, 200 HP humanoid) opens each phase with a speech and hands off to the giant scale-3 Spider (MATRIARCH_ARACHNA_BOSS, 12,000 HP), which handles Phase 1 and Phase 2 fighting. On the Phase 3 transition, the Spider stuns itself and the Leader returns as MATRIARCH_ARACHNA_THIRD_PHASE (200 HP, armor 10) to fight directly through a random-skill rotation plus an on-hit combo counter, with a Final Stand once she drops below 20%.

Spawn Command

/mm egg get MATRIARCH_ARACHNA

FAWE Arena: The arena pastes on its own when Matriarch Arachna spawns. Confirm FAWE is installed and that your server has write access at the spawn location before summoning her.

Meet the Matriarch

Phase Breakdown

Phase I. Spider form

100% to 61% HP on the Spider

Opens with the Leader speech, then hands over to the Spider. On spawn she is stunned and damage-immune for about 6 seconds while a cobweb blockmask goes down around her, then combat starts. Every ~5 seconds she rolls one of three skills. Melee attacks have a 40% chance to add a Web Entangle strike and a 50% chance to add a Poison Strike on top.

Broodmother Call Swarm. Summons 8-12 MATRIARCH_ARACHNA_MINION_SWARM at once, then picks one random buff for the nearest two (Speed, Strength, Invisibility, or Frenzy)
Venom Spit. Rolls a single venom projectile or a rapid multi-shot venom volley aimed at a player's location
Web Dome Trap. Ritual buildup, drops cobweb blocks and slow effects around her
On-hit Web Entangle. Extra magic damage, Slowness II, and a 1.5-block cobweb ring on the target
On-hit Poison Strike. Poison I for 4 seconds on the target

Phase II. Escalated Spider form

60% to 13% HP on the Spider

Once damage takes her into the 13-60% band, she teleports back to her spawn point plus 5 blocks up, stuns herself, and spawns MATRIARCH_ARACHNA_SECOND_PHASE (a Leader body that mainly plays the second-phase speech). Phase 2 adds a larger skill pool, an extra leap-or-pull picker every 5 seconds, and an extra Silk Whip on-hit special. Egg sacs enter the fight in this phase, not Phase 1.

Random pool. Web Cocoon Trap, Spider Spawn Burst (extra MATRIARCH_ARACHNA_MINION), Venomous Web Spray (projectile line), Silk Strand Lash (dual silk projectiles), Web Eruption (expanding cobweb rings), Spider Frenzy (self-buff aura), Egg Sac Explosion (spawns 6 dragon-egg display sacs), Aggressive Throw
Random leap/pull. Leap Attack (random location), Leap Attack Direct (on the target), Spider Pull (rope-pull a random player 20 blocks in)
On-hit extras. Web Entangle (Slowness III), Poison Strike (Poison II), Silk Whip (pull + magic damage) at 40/50/30%

Phase III. Leader takes over

12% to 0% HP on the Spider

The Spider removes its children, teleports back to spawn plus 5 blocks up, stuns itself, plays a long cinematic (soul rings, dragon sounds, particle tornado) and then hands off to MATRIARCH_ARACHNA_THIRD_PHASE. The Leader now fights directly with a random rotation and a 4-hit combo counter. On the fourth hit of a combo, one of three combo finishers fires based on which attack you last used (Venom Explosion, Shadow Barrage, or Berserker Frenzy).

Random pool above 30% HP (80% weight). Web Prison (cobweb + damage in a 15-block area), Shadow Clone (spawns MATRIARCH_ARACHNA_THIRD_PHASE_CLONE for 5 seconds), Poison Mist (self AoE poison particles)
Random pool below 50% HP (60% weight). Desperate Gambit (self-damage + heavy damage on the nearest player + heal), Blood Ritual (self-damage, +rage stacks, Strength II)
On-hit rotation. Venomous Slash, Shadow Strike, or Rage Assault, followed by a combo finisher every fourth hit
Final Stand at 20% HP. Heals to full, Resistance X, self-stun, cancels all damage, and starts a persistent aura sequence

Entities

MATRIARCH_ARACHNA

Leader. 200 HP humanoid using the matriarch_arachna_leader skin. Opens the encounter, delivers Phase 1 speech, then summons the real spider boss.

MATRIARCH_ARACHNA_SECOND_PHASE

Leader body used only to run the Phase 2 intro speech. Not the main combatant.

MATRIARCH_ARACHNA_THIRD_PHASE

Leader in her Phase 3 form. 200 HP, armor 10, movement speed 0.35, purple boss bar. Fights directly with the random skill rotation, on-hit combos, and Final Stand under 20% HP.

MATRIARCH_ARACHNA_BOSS

The giant spider. 12,000 HP, scale 3, purple boss bar. Handles Phase 1 and Phase 2 combat, then self-stuns before the Leader takes over.

MATRIARCH_ARACHNA_THIRD_PHASE_CLONE

Shadow decoy summoned by Shadow Clone. 10 HP, 1 damage, disguised as the Leader. Auto-removes after 5 seconds.

MATRIARCH_ARACHNA_MINION_ON_SPAWN

Small spider (scale 0.4, 3 HP). Summoned during the boss intro to fill the arena.

MATRIARCH_ARACHNA_MINION

Cave spider (scale 0.5, 3 HP). Extra add spawned during Phase 2 Spider Spawn Burst and buffed by Spider Minion Enhancement.

MATRIARCH_ARACHNA_MINION_SWARM

Tiny spider (scale 0.3, 1 HP). Called in groups of 8-12 during Broodmother Call Swarm, and one per hatched Egg Sac.

ARACHNA_2_EGG_SAC

Dragon-egg block display, appears in the arena during Phase 2 Egg Sac Explosion (6 sacs at 4-20 blocks). Explodes on players within 2 blocks for 2 damage and hatches 1 minion swarm spider. Auto-removes after 30 seconds.

Drop Items

Two drop tables. The Spider boss uses MATRIARCH_ARACHNA_DROPS (guaranteed + rare + legendary rolls, plus a duplicate at 50% and a rare duplicate at 1%). The Leader uses its own smaller ARACHNA_LEADER_DROPS.

Spider boss - Guaranteed (2-3 items)

Venom Sac

6-12 always, plus a bonus 3-6 at 55%. Custom crafting material.

Web Silk

8-16 always, plus a bonus 4-8 at 55%. Custom crafting material.

Spider boss - Rare (1-2 items)

Spider Leg Dagger

18% chance. Custom dagger.

Chitin Boots

14% chance. Custom boots.

Venom Dripping Helmet

12% chance. Custom helmet.

Silk Weaver Sword

10% chance. Custom sword.

Arachna's Silk Cloak

9% chance. Custom cloak.

Webbed Carapace Shield

8% chance. Custom shield.

Matriarch's Fang Blade

5% chance. Custom weapon.

Spider boss - Legendary (0-1 items)

Matriarch's Crown

2.5% chance. Custom crown.

Matriarch's Heart

2% chance. Custom artifact.

Eternal Weaver Orb

1.2% chance. Custom orb.

Void Web Artifact

1% chance. Custom artifact.

Leader (Phase 3 boss)

Own table triggered on the Leader's death. Guaranteed venom sacs and web silk, a rare gear pool with slightly lower drop chances, and a single legendary chance:

Leader's Fang Scepter

1.5% chance from the legendary pool. Custom weapon.

The Spider grants 600-900 XP, the Leader grants 200-350 XP. All drops require a player within 50 blocks (40 for the Leader).

Requirements

The pack file lists these plugin requirements:

MythicMobs 5.9.0+. Runs the Leader, Spider, minions, and every skill
FAWE (WorldEdit). Pastes and undoes the two arena schematics
LibsDisguises 11.0.6+. Applies the Leader's player skin
MythicCrucible 2.2.0+. Powers the custom drop items
PlaceholderAPI 2.11.6+. Used for boss bar and messaging placeholders

Drop the pack folder into MythicMobs and put both schematics (MATRIARCH_ARACHNA_ARENA.schem and MA_SECOND_PHASE.schem) in your FAWE schematics folder. The arena pastes on spawn via the Leader's intro and undoes on death or despawn.

Give the spawn location enough open space for the schematics to paste cleanly.