i think it would be nice and pretty useful if we had a config option that allowed us to give certain mobs immunity to the Coralium Plague and/or the Dread Plague. ((or perhaps if at all possible also... make them carriers? >:3c after all, there are plenty of modded mobs out there that certainly look like they could give you one of the plagues.)

i'd imagine it'd probably be like those other config options that just let you type the names of the mobs you want affected by it. admittedly, i don't know much about how mods adding effects to other mobs work, so i don't know how doable this is?