Strategic summary and impact analysis for patch 7.37d.
Widespread nerfs to core teamfight sustain items (Mekansm, Guardian Greaves, Pipe of Insight, Holy Locket, Crimson Guard) and utility/control items (Gleipnir, Rod of Atos, Solar Crest, Pavise, Seeds of Serenity). This drastically reduces overall survivability and utility provided by support and offlane itemizations, making teamfights more lethal, less forgiving, and emphasizing quick, decisive engagements.
With significantly less healing, damage absorption, and utility available from common item builds, burst damage and strong initiation are paramount. The meta favors shorter, more decisive teamfights where rapid kills and snowballing are key. Aggressive heroes and compositions that can secure kills quickly will dominate.
The removal of the 25-minute doubling bonus for Bracer, Null Talisman, and Wraith Band fundamentally alters early-mid game power curves. Heroes who relied on stacking these cheap stat items for efficient scaling will struggle, pushing the meta towards heroes with stronger inherent scaling or those who prioritize direct core itemization.
Nerfs to Arcane Boots (cost, mana regen, mana restored) and Ring of Basilius (mana regen) make mana management a more critical aspect of the early and mid-game. Mana-hungry heroes, especially supports, will need to be more judicious with their spell usage or find alternative sources of mana sustain.