Most people go with either deus ex machina type powers like control time, reality, immortality etc and honestly that’s what I would go with but to keep things interesting the three I’d choose that isn’t omnipotency would be:
Refill: The ability to refill an object with it’s last filled item. Example: Empty glass, refill it with water. Empty bank account, refill with money. Gun is out of ammo, instead of reloading just refill it.
Knowledge Steal: The ability to steal another person’s knowledge. This one would need a condition, like you must know that person full name and birthdate.Then you gain the ability to steal any and all information that person has. For example knowing a martial arts expert’s name and birthdate I’ll know everything he knows from technique to weaknesses.
Save Points: The ability to save and reload my body from different points of time. For example I could save my body at the age of 9 in 2000. Then when I’m 70 years old I could reload my life to the age of 9 in 2061. The downside being I wouldn’t remember what happened in between those 61 years.
Honestly I would use this outset to save my body before injury, like before I jump down a steep cliff I would save a point before I jump, then reload after I land to not sustain injury. Use knowledge steal to recover and information I might of lost. And refill to constantly give me what I need. I think this power set is fun but not overpowered.