So, surprisingly enough, Phoenix gets me the highest xp/minute out of every merc. I tend to only tap the quick pulse instead of charging it, giving me 20xp for healing, about 20xp per merc if their health is missing, and a much lower cooldown, making it available much sooner. This also helps when your dingbat of a teammate decides to run away from you, letting you catch up with them then trying to heal them again.
What’s your opinion on how to use his pulse? Charge or no charge, or something in between?