Level 70 Sage rotation?

[Vivix]

Idk I ended up running Holminster a few times due to many low lvl reapers in queue for example and there were 10+ mobs in some pulls. I played Diurnal AST prior so it made sense to keep a shield on the tank like I kept regen on them as AST. After applying dots to the bigger mobs and using charges of Phlegma before anything else I used Toxikon on whatever was left and spammed Dosis with 2 or less mobs remaining. There were few times where enough mobs and time was left to spam Dyskrasia. It felt like scathe to me where I'd try to avoid being in situations where I should use it.

[Rilifane]

Idk I ended up running Holminster a few times due to many low lvl reapers in queue for example and there were 10+ mobs in some pulls. I played Diurnal AST prior so it made sense to keep a shield on the tank like I kept regen on them as AST. After applying dots to the bigger mobs and using charges of Phlegma before anything else I used Toxikon on whatever was left and spammed Dosis with 2 or less mobs remaining. There were few times where enough mobs and time was left to spam Dyskrasia. It felt like scathe to me where I'd try to avoid being in situations where I should use it.

Keeping up regens makes sense if someone keeps taking damage and they constantly suffer a HP loss that guarantees ticks don't overheal but GCD regens are more of a last resort than bread and butter in all situations. Keeping up shields makes no sense, though, as they're just a preemptive heal and usually have lower potency than direct heals. Unless it's to prevent a one shot, they're inferior to direct heals and regens.
When it comes to heal potency alone, EDiagnosis is even weaker than Druochole below 85 because it's on the GCD which means you lose the 130 free heal from Kardia in addition to the damage. And it's a lot weaker than Taurochole. At 85 it's roughly equal to Druochole in terms of heal potency alone but still on the GCD and a dps loss that can easily be avoided by using other tools.
The most effective way to heal on any healer is cycling oGCDs, not keeping GCD effects such as Asp. Benefic or EDiagnosis up. Worst case, a paper tank takes more than oGCDs on their own can cover but then you have e.g. the regen from Physis I/II as an addional heal.
In all ShB leveling dungeons every tank pulled wall to wall and healing was comfortable without resorting to GCDs; no matter how Dyskrasia feels, it's weaker in practice because of the fall off. The damage on the first target may look nice, but it's still weaker than Dyskrasia and spamming Dyskrasia means constant Kardia heals. Every GCD heal makes you miss out on 130/ 170 potency free healing, more during Soteria. Sage is even more encouraged to cycle oGCDs properly.

[Vivix]

Thanks for going in depth. I am new to shield healers but also in that other mmo I come from healing is mainly from gcds and cooldowns were generally reserved for boss mechanics or mistakes. I probably need to take another look at all the potencies again.