As many of you know, invisibility potions are banned on EMC. I think there should be a new special mob drop. It would be an invisibility potion, but it would be drinkable.And, since Momentus drops zombie viruses, I think these should be a rare drop from Marlix. It would be called the ghost vial. When drunk, it would give you invisibility, weakness, levitation (1.9), and strong resistance.