Hello I've tested our modpack in SP and i was able to kill a spirit but since we put it on the server Ive tried to kill multiple spirits and all of them were invulnerable.
fml 1987
RT 373

I assume you tried to kill them with potions?

Wiki: "Spirits can not be harmed by physical attacks (An exception being the Spectre Sword), they are incorporeal after all. You will have to use magic to kill them (cough potions cough)"

but but but in sp i swear i killed it with a sword o.O more specificly either a tinkers cleaver or a weaponsplus lava sword.I know for sure because i was testing stuff on the copy of the server. Does it matter that i was in the nether when i was able to kill it?

Even more specificly, we have Levels and my lava sword might be leveled up with abilities mimicing potion effects, so is it possible that way?

Nevermind WeaponsPlus just bypasses your invulnerablitiy that confused me, @sokratis12GR will be sooo happy that im bringing him another thing to fix right after he updated :D

WeaponsPlus bypass the invulnerability because the weapons actually apply potion effect on the entity

Ok, so consider it a feature? :D

It is of course intended. @lumien231 You can close the Issue

Magical Swords.