A combitnation of the power to heal and strenght.
On a more realistic scale:
To shoot bolts of energy through my fingers. Incase of an emergency with someone's heart stopping, and if there isn't a nearby hospital, I can shock them back to life. I could also use that to charge up my cellphone and other electrical devices incase it runs out of battery life in a dire situation, let's say, a zombie apocalypse (Just kidding, more like going on vacation somewhere and forgetting to charge my cellphone beforehand).
On a non-realistic scale:
To freeze anything upon command. I actually really do wish I could do this in real life, but it's too un-realistic. In a room where people would find it normally cold, I'd find it hot. It's why I want to move out of California and travel somewhere that's much cooler in temperature.
In terms of there being a point to this super power, there really isn't much, besides cooling myself down to a low desired temperature, haha. Maybe if some hostile animal tries to attack me, I could summon a huge wall of ice to stand before me and protect me from any damage. Or give myself armour made out of liquid helium (-270 degrees Celcius) that maintains its temperature. There's lots of stuff I would do with that super power...
I would like the healing and invisibility power, so that when I'm hurt I can heal myself. Also when I turn myself invisible I can know what kind of gossip they are saying about me!