Before the fog
Leave room in your equipment load for Storm Ruler. The special anti-Yhorm attack does not require a conventional damage build.
01 · FIND THE TOOL
Collect Storm Ruler near the throne. Equip it, two-hand it, and hold its weapon-skill stance until fully charged before releasing the charged attack.
02 · MAKE SPACE
Use distance and his recovery to charge again. The empowered attack is the key mechanic; ordinary swings with Storm Ruler do not produce the same effect.
Common mistake
Releasing the skill before it is fully charged.