In the last 10.2 PTR build, Undulating Sporecloak’s shield has been halved, compensating for the nerf with a Versatility buff while above 70% health.
Undulating Sporecloak was a very popular item in Patch 10.2, especially when pushing for high Mythic+ pushing. This is due to it’s unique effect of a massive shield when you hit low health, likely saving you.
