I find myself more aligned with the stasis camp in this thread. Stasis can create some extremely amusing situations to travel quickly across the map and can also halt enemies in their tracks, which is really useful.
Bombs second for me because they're a pretty useful tool to fight enemies from afar.
I rarely use magnesis and cryonis outside of shrines and divine beasts where needed.
The camera doesn't really count for me, but I guess for completion's sake, I'll rank it last. It's a good way to locate far off shrines.