Guide
Combat medic is really damn good, too good one might say, but I really like doing some sweet damage with pip and I don't want my entire life to be dedicated to healing friends 24/7.
Mega Potion helps to deal massive bursts of healing in one go, and if you're lucky, you can chuck many of those consecutively in a few seconds. Even then, you have to learn to be a little conservative with your potions - I used to always try to keep my friends at full health, meaning tanks had 90% health and I threw a potion, only to get attacked and suddenly my potion being at a 6 second cooldown.
Learn when to not heal your teammates, and, in my opinion, this beats combat medic for the simple fact the enemies have one more enemy to fear, the small weird fox that out of nowhere can fully heal a 2500 class if they step back for a few seconds - and on top of that, will also aid do deal a bit of damage since healing isn't his only focus and nothing else.
You can replace Acrobat's trick and Shrewd Move with whatever cards, I prefer then since they activate upon elimination (and eliminations from healed teammates), and since you'll be doing some damage, you'll also get a few eliminations going. I sometimes change Shrewd Move with Pep in the Step when I know its going to be hard and my teammates will be close to dying, since Pep in the Step at level 3 or so, with that 20% movement boost can help a lot with escaping.