If you were the Messenger and could choose one of the 7 abilities...
...which one would it be?
Just to make it easier to recall:
1. telepathy;
2. healing;
3. enhanced strength;
4. shape-shifting;
5. spirit-walking;
6. visions of the future;
7. electricity manipulation.
I'd go with either 4 or 7. Too bad they don't have the mind manipulation/control ability on the show (like, persuasion in "Alphas", for instance).