Support for permissionsSuggestion
I hope that only users with permission by adding permission will have the effect of this plug-in.
currenty its global for all players. 
Permission allows you to create a global effect by adding permissions to the default group.

So I think adding Permission will expand the general nature of the plug-in.

Ah i see what your saying now. Yeah, adding permission checks for players to see if damages are modified or not, would give the plugin much more versatility that just the "All or Nothing" damage modifiers.

Originally I did not want to add anything but a simple mod as adding perm checks every time player takes damage can have more a performance impact. but ill test it out and see :)

Is the permission system something you are still planning to implement in the plugin? That would be really amazing!
yes, ill try to test some simple permission based config options soon.

tell me that you are still working on this, please tell me that you are going to add permisions.