The Beast Link spell is a single spell, but it can be used to locate Roar, communicate with Roar, and allow Roar to communicate and locate him too.
This versatility is the hallmark of a rank 3 spell. But there is another useful trait of the spell that warranted Arthur learning it while he was still in the second mortal coil.
This useful trait is that only special means can be used to block the link between them. In the absence of this blockage, the link between them can be used to find each other regardless of the distance between them.
While waiting for Roar, he thought about his next plans. The first thing he thought about was about how ready he was.
He made a mental summary of everything he had and asked himself, "Is there anything that I need?"
The first thing that came to his mind was weapons. After all, aside from spells, they are another way to improve one's strength.
