...or How I bumped your dps!
Originally, I used Power Infusion on myself for the mana conservation and speed when needed. Now I find myself looking around the group to find who can benefit from it as much or even more. Casting it on a mage seems obvious for the benefit. It occurred to me that a paladin tank could benefit from PI early in a fight. Shamans and Warlocks may benefit from it, I am not familiar enough with the other casting classes to make the call. Who are likely candidates for a little infusion?