The bear-like beast was Gaia's guardian animal, Artio.
This was the help that the high priestess had offered to Emery.
Since Nimue was unable to personally give him a hand, she offered to have Artio help him instead. Back then, Emery created a stone formation inside the shrine, ensuring he would be able to create a spatial gate for an emergency such as this.
The beast rammed the unprepared magus and pinned him to the ground.
ROAAARRRRR!!!
Artio fiercely swung his claws toward the magus. Each swing was without restraint, each of them created a small tremor to the ground, taking not only the magus aback.
BAM!!! BAM!!!
Without much effort, Artio was able to hold the magus down, continuously cornering him with barrages of attacks one after another.
As much as Emery wanted to just follow suit in attacking the magus, with his current condition, he would probably only hinder the guardian beast's movements instead.