Overheard this conversation about how you can prevent Vanaduke spawn mobs by aggro it before it hit the floor with mace to spawn mobs.
But they say its interval is too short & fast that you can hardly aggro it in right time.
I know that Vanaduke spawn mobs randomly, sometime it spawn, sometime it doesn't.
And we all glad that if Vanaduke didn't spawn Guards during its last phase.
List of myth
1. Run into the wall as soon as it finishes loading the "cutscene"
2. Use Maskeraith cloak and run to the top corners
3. Throwing water or dropping a bomb before phase 3 and 5 stop him from spawning enemies.
4. Flinching Vanaduke at the start of the phase would stop the spawns.
Just run into the wall as soon as it finishes loading the "cutscene" or use Maskeraith cloak and run the the top corners.