Speaking as a good guy: Either healing or teleportation. I would make good use of either one.
Speaking as a bad guy: Force Choke, just like Darth Vader.
If it is teleporting teleporting others i find it more usefull than self teleport beacause unless you are an assasin you are the fastest postman ever (at least that i feel like).
i would choose time control in either case
You know how many movies explain why you SHOULDN'T time travel? :P
Perhaps some sort of connexion with the Sea, as an Elf. They have a passion for the Sea, even Legolas, whom had never seen it before (I don't think)
I would choose to have control over a certain area or have time control but only backward.
I think psychometry or psychokinesis would be a pretty cool power 😋
Do you mean telekenisis?