The Hungering Portal

The End Portal doesn't simply open anymore — it hungers. Before anyone can step through, it must be fed: a ritual of rare offerings laid at the frame and witnessed by a gathering of players. Only then does the way open... to a far deadlier End.

The ritual

Bring the portal what it craves and offer each one up:

A Trident, a Netherite Block, a Sniffer Egg, an Enchanted Golden Apple
A Totem of Undying, a Beacon, a Mace
Sixteen Wither Roses, a Conduit, and a Zombie Head

With every offering placed and enough players present as witnesses, the portal opens. Fall short and it grows impatient — it seals itself and hands your offerings back.

A harder End

Beyond the portal waits a reworked, multi-phase Ender Dragon: five phases and crystal-fueled revivals that turn the old victory lap into a real test for the group that opened the way. (End fight derived from RogueCraft, CC BY-SA — credit to MonoCode.)

Details

Server-configurable number of players required to open the portal (with an in-game config screen for operators).
Ships as a datapack-in-jar plus a mixin that suppresses the vanilla fight, so nothing double-triggers.
Fully localized per player from the server side, so even vanilla clients read it in their own language. English and Traditional Chinese included; more translations welcome.