I personally think sage needs 3 small buffs and 1 nerf

Nerf- remove the aoe regen from kerachole so it stays a mitigation tool
Buff- Zoe buffed to guarentee crit on next heal. Currently the only time this is used is with cure 1 diagnosis on the rare occasion you need to heal a single target up and dont want to blow an addersgall, a crit guarentee will give it some synergy with pepsi which is otherwise rarely used
Buff- Toxikon to a higher potency of 660 or higher. That way its not a loss to use
Buff- Rhizomata and Pneuma generates an addersting when used so you dont go entire encounters with only a single toxikon