IllegalStackMode - dniym/IllegalStack GitHub Wiki
CHILD OPTION OF Overstacked Item Protection
Setting this option will allow you to use the AllowStack list as a WHITELIST or a BLACKLIST, If TRUE this list is a whitelist and only entities on the whitelist will be allowed to break the vanilla stack limits. While if FALSE this list is a blacklist and only entities on the list will be prevented from breaking the vanilla stack limits.
- To toggle between whitelist(true) and blacklist(false) use the following command: /istack toggle IllegalStackMode
This protection has no extra options.