phone Obi-Wan
I actually had to double back on this one, I love this 
In terms of dealing with Grevious as disc priest itâs definitely doable (I main a disc priest), they do have some great ways of dealing with it, providing you donât mind changing talents specifically for that week.
Both Icy Veins and some youtube videos have tried to help with the stigma that disc isnât good with grevious so they are worth reading/watching if youâre interested in the âbestâ setups, but I do believe grevious tends to be tricky for any healer if the group isnât specifically playing around grevious and concentrating on making sure the healer is comfortable that week (just like you would on other affixes making sure the tank is safe etc). I also feel the benefits disc can provide with extra burst do help shave valuable time off a run, even if people have to help with their own cooldowns to ensure you can clear grevious before moving on. To each their own of course, but I just thought I would weight in there 