End of Peace: Phantom Infestation Makes High-Altitude Bases Dangerous

Let’s be honest: building a base in the sky or on top of a mountain is currently an easy mode. Once you go above Y=120, the game loses all its danger. No creepers, no zombies, total safety. It’s time to end this peaceful exploit and make the skies terrifying again.
The Concept: Phantom Infestations
The sky should belong to the Phantoms. If an incompetent player decides to live in the clouds, they must fight for their survival.
Phantom Nests: A new terrifying structure generating on high mountain peaks and floating sky islands.
The Siege: Spending more than two consecutive in-game days above Y=120 triggers a "Sky Siege". Phantoms will attack your base in aggressive waves, completely ignoring whether you slept or not.
Breaching Defenses: To make it truly intense, Phantoms can now break standard glass blocks to get inside your safely lit modern mansions. You want safety? Use tinted glass or reinforced blocks.
The Ultimate Reward: Destroying a Phantom Nest drops a "Heart of the Storm". This ultra-rare item lets you craft a Lightning Turret to automate your sky base defenses.
Minecraft needs more end-game challenges that force us to adapt, build defenses, and actually fight for our territory. Stop hiding in the clouds. Let’s make the sky dangerous.