Originally Posted by
SeverianLyonesse
So there's a concept in MtG called utility. Where oftentimes the best cards to put in a deck are not the ones that are the most efficient at accomplishing the deck's primary goal, but because they can serve several different functions depending on context. The idea being that even if the *optimal* context doesn't present itself.... snip
So in the hands of a flexible healer, having a utility ability like this *could* in theory be a safeguard for healers to salvage runs that would otherwise wipe.
Now, I haven't put enough thought in as to whether this is actually the case here, but I don't believe in simply dismissing the possibility of using an MP-regenerating heal for suboptimal healing at face value.
Again, on the topic of utility. I agree that E. Diagnosis is best used for downtime. However, when a tank is...ahem...tanking, and forced me to expend all my OGCD shields, I may throw out a E. Diagnosis for the shield value. And then I get a bonus Toxikon for mobility/mobs. With a tank that knows what they are doing, I don't need it, but for random matchups, it's a versatile verb.