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WoW TBC Classic Anniversary Phase 2 Raid Tanking Every Serpentshrine Cavern Boss Guide

Category: WoW TBC Classic Anniversary Posted: May 13, 2026 Views: 15

WoW TBC Classic Anniversary Phase 2 kicks off on May 14th. Whether warriors, tanks, or healers, players have already returned to the game, warming up their gear and consumables for Serpentshrine Cavern and Tempest Keep raids. These preparations only get you to the minimum threshold for participation - every raider must also learn how to handle boss mechanics.

This is especially crucial for tanks. A single fatal mistake by the tank in a raid can keep the healers working as frantically as a pianist at a concert. So let's briefly go over how tanks should handle each boss encounter in Serpentshrine Cavern.

WoW TBC Classic Anniversary Phase 2 Raid Tanking Every Serpentshrine Cavern Boss Guide

Hydross the Unstable

The core of Hydross the Unstable fight is resistance gear. At the start, Hydross is in his Frost Phase. In the first week, most guilds will deliberately push him into his Nature Phase. Therefore, depending on which phase you are assigned to tank, you need to prepare either Frost Resistance or Nature Resistance gear.

Highly optimized raid groups might skip resistance gear entirely. However, stacking around 244 resistance is generally recommended for the first week. After that, you can adjust between 244 and 300 based on your group's performance.

Another common strategy is to keep Hydross in his Frost Phase throughout the entire fight, avoiding a phase swap. In this case, you will need about 365 Frost Resistance to cope with the lethal debuff that stacks up and increases his damage by 500%.

Fight Flow

Approach the boss from the side at the start to minimize early threat distance. His initial damage is low, but as the debuff stacks, Frost damage you take will ramp up from 10% all the way to 500%. At the beginning of the encounter, some cinematic adds appear in the middle - they are not a major threat.

Hydross casts a stun called Water Tomb. Melee players should split into two groups and spread out to avoid being crowd-controlled together. Paladins can remove it with Divine Shield.

When the damage bonus reaches 100%, you will typically pull the boss to one of the flags on either side of the room to trigger a phase transition. On transition, Hydross completely resets threat, so an off-tank or Misdirection is needed to pick him up quickly.

At the same time, he summons four water-elemental adds, each dealing about half of Hydross's damage. These can be Banished or stunned. If your raid has four warlocks, they can easily banish all of them.

Note that all of Hydross's attacks count as elemental melee attacks - this means Armor and Block are ineffective, and he cannot land crushing blows, though he can still critical hit.

A common tactic is to kill him in Nature Phase after a single transition. Avoid a second transition, as he will reset threat again and summon new adds, which often leads to a raid wipe.

Fathom-Lord Karathress

Early on, a survival-oriented tank setup is recommended. Fathom-Guards are level 71, so they cannot land crushing blows, but Karathress himself can.

Fathom-Guards

  • Fathom-Guard Tidalvess: Deals extremely high burst damage and should be the priority target.
  • Fathom-Guard Sharkkis: Activates The Beast Within, increasing his own damage by 30% and his pet's damage by 50%. He also casts Leeching Throw on players with mana - this cannot be dispelled.
  • Fathom-Guard Caribdis: Casts a Heal that ignores line of sight. Someone must be assigned to interrupt it.

Fight Flow

It is advisable to pull Karathress away from the rest of the raid to avoid having everyone deal with multiple crowd-control effects at once. The most dangerous moment is the opening phase - you need to quickly kill Tidalvess and Sharkkis. When Karathress drops to 75% health, for each surviving Guard, his attack speed increases by 66% and his damage by 66%.

Therefore, the strategy is to kill two of Guards first. After that, Karathress inherits some of their abilities, but the threat is far lower than at the start.

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Leotheras the Blind

Leotheras's fight has two phases: human form and demon form. He appears after you clear Spellbinder adds. Before that, you can pre-place Consecration and activate Divine Shield.

Human Phase

Leotheras has the dual-wield penalty, giving him an inherent 19% chance to miss. He frequently casts Whirlwind, so the actual physical damage dealt to the tank is very low.

Early on, you can gear for uncrit and uncrushable, but later, since his damage isn't high, you can drop some defensive stats.

Every time Whirlwind ends, he resets threat. A protection paladin can precisely throw Avenger's Shield at the exact moment Whirlwind finishes, or use Misdirection, to establish initial threat.

Demon Phase

When Leotheras transforms into a demon, he begins casting Chaos Blast, which deals about 1,700 Fire damage and applies a stacking debuff that increases subsequent Fire damage taken by 1,700.

Chaos Blast is a binary spell (either fully hits or fully resists), so tanks must stack Fire Resistance. Around 300 is recommended for the first week, which can be adjusted later based on your raid's kill speed.

Paladins can remove the debuff with Divine Shield. Chaos Blast also has a splash damage effect, so melee players need to keep their distance.

When Leotheras reaches 15% health, a scripted event triggers - he simultaneously exists in both human and demon form. If he enters this phase while already in demon form, the raid can continue attacking him during the transition. This phase is very dangerous because Chaos Blast debuff from the demon form persists; if it stacks too high, the tank can fall quickly.

The Lurker Below

The Lurker Below has a unique mechanic - you need to fish to summon him.

Opening Phase

The tank should face the boss away from the raid, while the rest of the group spreads across the platforms around the room to handle adds that spawn in the intermission phase.

His Whirlwind has a knockback effect. A simple method is for the tank to take a small step forward - this will knock you back just to the edge of the platform without falling off.

The Lurker Below also has a beam mechanic similar to C'Thun. When you see the warning, the tank must jump into the water to avoid it.

Intermission Phase

The boss submerges. Ranged adds spawn on three surrounding platforms, while two melee murloc adds swim in from the sides. These murlocs cast a very high-damage Cleave. The tank's job is to pick them up and ensure their front faces away from any raid members.

Morogrim Tidewalker

Morogrim Tidewalker deals very high physical damage, so the tank needs a more survival-focused gear setup.

The tank must keep the boss facing away from the raid at all times to avoid his frontal Cleave. After Morogrim casts Earthquake, a large wave of murloc adds spawns.

These murlocs used to be a major wipe cause because they applied a Sunder Armor effect that reduced the tank's armor by 75%. However, after nerfs, the murlocs have 75% less health, deal 30–40% less damage, and no longer have Sunder ability. They are now very fragile and can be quickly cleared with AoE attacks.

When the boss drops to 25% health, he summons Water Globules but stops casting Watery Grave. At this point, the tank should pull Morogrim into a corner, away from the globules, and the raid can burn him down directly.

Lady Vashj

The final encounter is against Lady Vashj, which consists of three phases.

Phase 1 (before 70% Health)

In the first week, an uncrushable setup is recommended, and she can be single-tanked. The tank needs to watch for two abilities: Static Charge and Entangle.

Static Charge stuns the tank - this can be prevented by placing a Grounding Totem in the tank's group. Entangle roots the tank in place, which can be removed with Blessing of Freedom. At the same time, Vashj takes a step backward; the tank must immediately run back into melee range and then reposition her to the original spot.

Phase 2 (below 70% Health)

Vashj becomes immune and gains a shield. Four shield generators spawn around the room. The raid must kill the Tainted Elementals that appear around the area, pick up Tainted Core they drop, and pass it to players next to each generator to activate it. Once all four generators are shut down, Vashj's immunity shield drops, and each shutdown also reduces her health by 5%.

During this phase, two types of elite adds spawn. Striders frequently cast a group-wide fear and are usually handled by ranged tanks. Coilfang Elites cleave - the tank should hold them in the center of the room, facing away from the raid.

Phase 3 (below 30% Health)

In the nerfed version, Mind Control mechanic has been removed from this phase. Phase 3 repeats the abilities from Phase 1 but adds poison puddles on the ground. Spore bats flying overhead drop poison - just avoid standing in it.

These are the key points every tank needs to know for the boss encounters in Serpentshrine Cavern raid. Hopefully, they help you reduce mistakes during the second phase of raiding.

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