The Problem

I want to block being able to put shulkers into enderchests.

The perfect solution would be to use the blacklist feature of WorldGuard.
https://worldguard.enginehub.org/en/latest/blacklist/

Even better, if its just adapted to allow blocking putting X item into Y container, then we can have all sorts of unique possabilities for gameplay.

A Solution

New event for blacklist, something like enderchest-in and enderchest-out (and do the same for all containers)

Then it would be something like

[BLACK_SHULKER_BOX, BLUE_SHULKER_BOX]
enderchest-in=deny,tell

Alternatives

No response

Anything Else?

No response