Its so op to the point were its unlikely that a actual player no matter how stronk could use it like think about it you could use permanancy with instant damage on a some player that person would never be able to play again it might as well just be an insta kill button i mean there would probably be restrictions but all i can think of anything but removing it, like its flippin god powers GOD POWERS.
Imagine ur just playin and then some dude comes up to you and gives instant-damage FOREVER or the other way around instant-healing both of these would be way to op so yeah thats it.