IHaveHidden
Snape magic should be smoother and more robust with him going through the trial of life and death should of improved his spirit even if he doesn't think so and his Will of not only surviving 75 floors but to actual face one of his deepest fears and open his heart to a chance at love even with no idea how outcome would be. Also, his imagination as blacksmith should help in his spell crafting when comes to picturing result he wants...
I'm surprised he did not tell anyone he was disappearing from the game ? he seems to have been emotionally invested in them to a degree after fighting together for so long. I was expecting a quick im dying but not dying speech or something So they'd know he was leaving for good .also it says he selected Argo.. does that mean he picked Kirito or is Argo Someone else ??