yeah sorry i meant is the 0/-1 permanent or just for the duration of the cloak?
but if it just deals damage then i think it should say so, otherwise i am pretty sure the way its worded would mean the creature couldn't be healed of said damage,
kinda like how you cant heal a scarab of the -0/-1 it gets from the death of another scarab.
:/ sorry i think im just adding more confusion to the mix