Headcannon that should be cannon if that day comes.
[Y'all know in Supernatural when the angels die, their wings get scorched on the ground. So just imagine Phil dies.]
His wings are scorched into the snow, which doesn't melt, ever making it black. And after they bury him, in the gap between two wings, a red heart appears out of nowhere. Techno comes one day and decorates it the wither roses making it look like the hardcore heart which Phil wore as a pendant.
The trees grow wildly afterwards; they cross the fence. The things Phil built for his most loved ones, his priced items, beloved gifts and the black wings emit the bedrock particles all the time. [in the old version of Minecraft, the bedrock had tiny particles coming from it and Phil loved it]. The particles never go away and the whole place gets a dark graceful glow, powering it. Just imagine. The arctic area, his wings, the few things here and there or the friendship emeralds emitting tiny particles.
Imagine Phil asking for Techno's safety to mumza and she just gifts it in subtle ways like the particles because she knows Techno and his ways. Techno won't know, he isn't a building genius. And the particles are very old too.
An eternal ruin for an almost eternal angel.
I am writing a oneshot on this which I will post tomorrow :D
Please stay tuned! Reblogs appreciated. I will link the oneshot here.