The seal that prevented Shaman from using her mana prevented the ambient mana from entering the room, making it impossible to create water, fire, air and earth. However, due to her stardust being a unique type of mana, it did not require the base 4 elements to be formed.
This allowed the use of her royal bloodline arts, which were completely unrestricted since the space attuned ambient mana was not limited within the seal.
Elanor's grandpa, who wore grey robes, stood above the vent and came to this realisation after taking a closer look at Shaman and the properties of her unique element.
'How troublesome.' It threw a spanner in his plans as he didn't have the energy to waste on fighting.
"Do what you want with my granddaughter, now get out of here." Seeing the situation going downhill, he turned to leave when suddenly a rift in space opened behind him.
