Do not estimate pet durability using old Stamina scaling. The official update reduces pet Health from each point of the master's Stamina from 7.5 to two. Spellstones now correctly increase only Shadow damage, not Fire.
Check pets and shards
That scaling is only one Health source, not a complete durability formula. Observe manageable pulls, check pet commands and prepare Soul Shards before grouping.
Drain Soul's chance to grant a shard on damage rather than a kill is significantly reduced, with no new probability published. Do not invent an exact yield.
Separate talent and spell changes
Improved Drains increases Drain Mana's amount but no longer buffs Wrack. Wrack's own coefficient and base damage are raised separately. Shadow and Flame grants 4/8/12/16/20% damage; check which effect applies to each spell rather than copying bonuses across all schools.
Our old best-leveling and comparable-performance claims lack current in-game comparisons and are withdrawn. Coordinate crowd control and damage targets, then check the dungeon directory. Historical Warlock builds are study references, not guaranteed current rotations or gear recommendations.