Basically just created a giant platform that can be spawned in the air. You were supposed to gain a buff against anyone within its radius but that part didn’t end up getting fixed (part 1 of why it was put on hold)
The platform collided with players/NPCs but not attacks and lasted like 50s. It also acted like an Ice/Magma platform (meaning you cannot regen air movements, leaps, or reflex charges).
Certain magics also did hazard damage on contact.
This basically meant you could create an enormous airstall platform above someone and they are put at a massive disadvantage for trying to contest you. Then you can just throw down massive zoning attacks and spam projectiles. Part 2 of why it was put on hold.
And since Berserker is highly reliant on air movements, yeah that made it useless.