I don't know how many UBRS runs this took but I can tell you it took less then my RoL savage glad runs [ 600 ] : r/classicwow
Classic WoW - Upper Blackrock Spire Guide (UBRS)
Upper Blackrock Spire (UBRS) Dungeon Strategy Guide - WoW Classic Season of Mastery - Guides - Wowhead
Skaath from Esper reserving all BoE's, patterns, Cards, skins, and even Boss Drops in an UBRS. When I asked why, I get kicked and he whispers this to me. : r/Rattlegore
Upper Blackrock Spire (UBRS) Dungeon Strategy Guide - WoW Classic Season of Mastery - Guides - Wowhead