Who cares if the bird plays along, I actually laughed out loud at that last panel. I like laughing. Laughing's good.

Meteor swarm is never a guaranteed hit; attacking a target directly requires a ranged touch attack. If you miss or don't try to strike a victim directly, there's a reflex save for half damage. Anyone in the aoe is gonna take at least that half damage so technically you could call that a guaranteed hit.

...I so want the bird to go along with this, JUST so I can see what would happen to the Phylactery.

What's in the phylactery anyway? his soul? His life force? Some quinessental Xylonness? Because if it holds anything that could be said to have his will...

Yeah.

Also if V seriously sends Blackwing into there I hope he knows he's about to throw another level into the pile.

My question really is, is it possible that sticking Xylon in there makes him worse?

Not really, because then killing him permanently ends him forever as opposed to just giving him a few weeks to regrow a body/find a new corpse to inhabit. Same as Lich from 8-Bit; they throw his soul into his body, "Congratulations, you've reduced me from an immortal god to merely an undead creature with complete mastery over the elements," or whatevs.

You can kill liches in either order but usually it goes lich-phylactery rather than phylactery-lich.

I mean, that's what I thought and that's why they think, obviously, and if that what they were throwing it in was something I understood, like Mt. Doom in Mordor, or a woodchipper, or something, I wouldn't ask. But who knows what happens when you throw souls into the Snarl?

The Snarl is nothing but chaos and consumption - it will shred his soul and devour it, ending him permanently, just as it did with Soon's wife, and as it will with the world if the rifts are opened.

Or so they assume. It is entirely possible that this plan will bite them in the ass somehow (if the bird goes along with it and they are not stopped).