The power to do anything would be so literally impossible even if you ignore science, okay first of all “destroy the universe” or “destroy time” or “freeze time” but let’s just ignore that.

How precise do I need to get in teleportation for example because there could be two people named Mary that are 16 that are white and live in China and like noodles, like I am not going to specify so many details so how would it differentiate?

Wait couldn’t a person just change their name or grow older and I don’t know making my internal vision of them inaccurate? How do you do that!?

Also if I turned myself into a tiger, would it simply copy the tiger genes or mix human and tiger genes? A tiger cannot speak so I wouldn’t be able to use my power then or maybe it’s a mix so I can do human things like standing up on two feet but am still a physical tiger? But maybe the knowledge that a human has will allow the tiger to do that stuff? But tigers eat humans and well since this would be a former human they wouldn’t be ok with eating humans so wouldn’t they just starve because a tiger cannot like eat human food?

Also what if I said “reverse time”, then it would go back in time to the moment before where time isn’t reversed then it would flow forward and find the moment where I say “reverse time” so it would be stuck in an infinite loop except of course the powers are in another dimension which is a whole other can of worms.