On a more serious lore note, like Excalibur this is a really creative and cool rendition of Avalon and again underlines how much thought the author put into taking the legends and finding unique spins that still remain true to the core. King Arthur in particular has been done to death, so it's extra neat to see a take that's fresh. Avalon was always the greatest treasure arguably, more so then the sword as it protected him from sickness/injury or even aging. Here Avalon allows Arthur to make use of reality warping alternate world line power without succumbing and being stuck with it (at least so long as he maintains control).
In turn it's also a creative fresh downside to Excalibur, that any self he picks is indeed a potential "real" self just as real as the idol version, and thus it's the exact opposite of a typical time limited super power, rather the risk is that it'll take over permanently. Of course the result would still be "Arthur" but a new version who'd have had different experiences and a different take on things, a really neat death and birth in one that sort of fits a RGS theme of toying around with what makes a person who they are, when bodies or even minds might be fluid. Making use of his infinite alternate selves yet maintaining a "real" self he chose to be is the challenge. Awesome.
cuuuuuuuuuuuuutttttteeeee
