Simple Phantom Rework and Nightmare Mechanic Reimplementation

To keep it brief and concise:
Flip the Phantom's current mechanics, and bring back Nightmares (.

Instead of incrementing a counter every night you DONT sleep, increment a counter every time you DO sleep... without a roof over your head.

Every night you sleep outdoors, the counter rises, until one night you're kicked out of bed and attacked by Phantoms. Every time you try to go back to sleep, it spawns another wave (if the last Phantom is not dead yet).

If you sleep with a roof over your head, or simply dont sleep at all, the counter does NOT increment, and slowly decreases over time (once every 1-3 days?) instead.

I feel like this is the most "Mojang-like" route one could take with the idea of a "Phantom Rework", keeping it closest to the original vibe, without sacrificing anything about them in the process.