Lower Blackrock Spire

Preparation checklist

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If working on the Seal, agree who rolls for gemstones before the first boss.
If doing Kibler’s Exotic Pets, bring the Empty Worg Pup Cage before clearing Halycon’s area.
If doing Mother’s Milk, arrange the return to Ragged John before the spider fight; dispelling or dying loses the required state.

At a glance

Plan a five-player WoW: Forever dungeon party. Location: the upper part of Blackrock Mountain. The inherited approach follows the outer ramp and chain/ledge route to Blackrock Spire's portal, then takes the lower branch into LBRS; the locked upper branch leads toward UBRS.

Use the 55-60 band for provisional planning, with a first group nearer 58-60 for Wyrmthalak and Urok. Allow about 90 minutes or more for a quest clear. In the inherited access plan, LBRS itself does not require the UBRS key.

The detailed route and quest chains below are a Classic evidence baseline for Forever. High-level Forever access, eligibility, event rules and drops remain unconfirmed here; check the current requirements before assembling the party. This is public-source research, not an in-game clear.

Quests to pick up first

Both factions

Seal of Ascension, available from level 57 in Classic: keep an Unadorned Seal of Ascension, a random LBRS drop, and speak to Vaelan, concealed in the early Hordemar City area. Collect Gemstone of Spirestone from Omokk, Gemstone of Smolderthorn from Voone, and Gemstone of Bloodaxe from Wyrmthalak. These are not guaranteed for every collector in one run. The unadorned seal is an input, not the reward for handing in three gems.
Urok Doomhowl, Warosh inside: loot Omokk's Head and collect a Roughshod Pike from the clickable pikes along the early bridge route. Use them at the Tribute Pile beyond the spider area to begin the waves, kill Urok and return Warosh's Mojo to Warosh.
En-Ay-Es-Tee-Why, Kibler at Flame Crest in Burning Steppes: collect 15 Spire Spider Eggs around Mother Smolderweb. Opening eggs can produce spiderlings; gather them before moving on.
Kibler's Exotic Pets, also Kibler: bring the Empty Worg Pup Cage and use it on a Bloodaxe Worg Pup in Halycon's area before killing every pup.
Mother's Milk, Ragged John near Flame Crest: return with Mother Smolderweb's poison still on you and speak to John so he can remove it for the Milked objective. The poison periodically roots its carrier and nearby allies. Arrange the return before the spider fight; dispelling it or dying loses the required state.
The Final Tablets, Yeh'kinya at Steamwheedle Port: this is a later stage of the Mosh'aru chain, after its other dungeon steps. Check for the two tablet objects in the troll area if the objective is active.
Eligible Blacksmiths have specialisation objectives here, including Vosh'gajin's Snakestone for Master Axesmith and Bannok Grimaxe's Arcanite Reaper plans as a rare drop. A profession objective can change which detours the group needs.

Alliance

Put Her Down, Helendis Riverhorn at Morgan's Vigil: kill Halycon.
Bijou's Belongings starts with Bijou inside. Return her belongings, accept Message to Maxwell and take it to Marshal Maxwell at Morgan's Vigil. His Maxwell's Mission follow-up needs Omokk, Voone and Wyrmthalak on a later accepted stage.
General Drakkisath's Command, Alliance-only in Classic: inspect Wyrmthalak's item and take it to Marshal Maxwell for the follow-up into UBRS.

Horde

Warlord's Command, Warlord Goretooth in Kargath: use his conversation/instructions to accept the quest before travelling. Kill Omokk, Voone and Wyrmthalak and collect the Important Blackrock Documents from their possible ground-spawn locations. This starts the Horde Onyxia attunement chain; boss kills alone do not complete the document objective.
The Pack Mistress, Galamav the Marksman in Kargath: kill Halycon.
Operative Bijou, Lexlort in Kargath: find Bijou, recover her belongings, then take Bijou's Reconnaissance Report back to Lexlort. The report does not finish with Bijou again.

Finish the UBRS key outside the dungeon

After giving Vaelan the seal and gems, take his Unforged Seal of Ascension and Orb of Draconic Energy to Emberstrife in Dustwallow Marsh's Wyrmbog. Bring help, lower Emberstrife to the quest's weakened state without killing him, place the seal, control him with the orb and use his breath on it. Return the forged result to Vaelan for the finished Seal of Ascension. Read the quest instructions before using the limited-charge items. A normal Emberstrife kill does not forge the key.

The run

The main route visits the ogre rise, troll areas, spiders, optional Urok pile, worg rooms and final chamber. Side drops can skip bosses and quest NPCs, so use the full route on a first clear rather than copying a farming shortcut.

Find Bijou down the ramp in the room after Vosh'gajin. Accept her collection stage, look for her belongings in a small chest at one of its lower-city spawn points, and return it to her before taking a shortcut onward. Check the cleared troll/orc rooms, including the Firebrand orc area before Mother Smolderweb; there is no single guaranteed chest position.

Early Hordemar City: visit Vaelan and Warosh if needed. Pick up the Roughshod Pike while the party is near the bridge route. Check document spawn points for Warlord's Command as you reach the named boss areas.
Highlord Omokk, ogre rise: clear nearby ogres, face him away from the group and put the tank's back against safe terrain for Knock Away. Save a defensive for Enrage. Loot both the possible gemstone and Omokk's Head if summoning Urok.
Spirestone rares, optional: Spirestone Battle Lord, Spirestone Lord Magus and Spirestone Butcher can add loot but are not guaranteed. Clear their companions and interrupt or dispel the Magus's control and buffs rather than combining him with another pack.
Shadow Hunter Vosh'gajin, troll area: remove Curse of Blood, which raises physical damage taken, and plan for Hex disabling a player. Keep backup healing or a pickup ready if it affects a critical role. Check any smithing quest drop and nearby tablets, then visit Bijou down the next ramp if needed.
War Master Voone: face Cleave away from melee and heal through Mortal Strike's reduced-healing window. Save a tank cooldown for a bad overlap, and keep the healer out of Snap Kick range so its stun cannot interrupt recovery. Loot the possible Smolderthorn gemstone.
Mother Smolderweb, Skitterweb Tunnels: face the boss away so Crystallize does not stun the party. Gather spiderlings and collect eggs. Cure Mother's Milk for ordinary players, but preserve it for anyone deliberately completing Ragged John's quest and arrange their departure. Crystal Fang, optional rare, is a separate spider if present.
Urok Doomhowl, optional summon: clear the Tribute Pile area and nearby patrols first. Use Omokk's Head with the Roughshod Pike to begin. The tank gathers each ogre wave and the party interrupts casters; use the pike's available interaction during the event to help kill an ogre. Recover during lulls without wandering off. When Urok arrives, keep fear paths clear and heal through Rend, then loot Warosh's Mojo.
Quartermaster Zigris, optional side room: clear his guards, interrupt or move away from dangerous close-range effects and focus him. Take this detour if someone needs his loot or recipe.
Halycon, worg room: use any quest cage on a pup before clearing them all. Kill surrounding worgs, then Halycon, and keep mana and cooldowns for Gizrul.
Gizrul the Slavener: comes after Halycon's death. The tank picks him up immediately while the healer maintains health through strong bites and his damage-over-time effect. Do not leave the room to loot or drink as he arrives.
Overlord Wyrmthalak, final chamber: clear the approach and tank with a wall behind you for Sweeping Slam. Melee stays behind him. Around half health, reinforcements enter; gather and control them, then kill them or finish the boss according to the tank's damage intake. Loot the possible Bloodaxe gemstone and any eligible faction quest item.

Additional optional rares include Bannok Grimaxe along the route, Ghok Bashguud with guards before the final area, and Burning Felguard from a warlock portal. None replaces a required boss or guarantees a profession recipe. Avoid opening the next pack while checking a rare's spawn.

Loot worth staying for

Inherited highlights for Forever route planning; confirm the current item and boss table before farming:

Omokk: Boots of Elements.
Vosh'gajin: Shadowcraft Gloves and Blackcrow.
Voone: Beaststalker's Gloves.
Mother Smolderweb: Wildheart Boots.
Urok: Rosewine Circle, Slaghide Gauntlets and Top Half of Advanced Armorsmithing: Volume III.
Gizrul: Wildheart Spaulders.
Wyrmthalak: Beaststalker's Mantle, Trindlehaven Staff and Heart of Wyrmthalak in late Classic tables. Older sources also list Heart of the Scale; check the current Forever table before farming that legacy trinket.
Bannok, rare: Plans: Arcanite Reaper. Zigris can drop Plans: Annihilator. Recipes and gemstones are separate loot goals with no guaranteed one-run completion.

Tips

Agree who rolls for the Seal gemstones before the first boss. More than one player can work on the key, but a single gemstone drop does not supply the whole party.
Mark Bijou's turn-in and the Urok return to Warosh before taking any one-way drop. A shortcut can save a farmer time while stranding a quest group below its NPC.
Remove curses promptly, and discuss Mother's Milk before the poison lands. The normal cure advice and the quest requirement deliberately differ.
All five players should finish required kill and object objectives before leaving. A raid-sized group can lose ordinary dungeon quest credit in Classic.