Adventurer in need

[GrimGale]

You could try Astrologian, where you can also use cards to buff others' damage.

I progged E9s-E12s with Astro because I couldn't stand Broiling anymore. It's busier because you get to weave in a card every time you re-apply Combustion or cast Malefic. It's high APM really, but you still cast Malefic back to back most of the time. Cards are mindless and dumbed down you no longer care for their effects beyond melee or ranged, while still requiring you to fish for seals.

Of the three its the busiest healer, and arguably the most complicated (Opening wise), so I agree it's a good option if you are bored of healing with the other two.

AST alone doesn't redeem the absurd healing downtime though.