Kardia is a refund for DPS’ing why should it proc off GCD heals, eos is irrelevant here because just as you lose a kardia tick to using e prognosis you also lose embrace ticks to casting fairy spells or moving eos because of her GCD

It completely messes with SGE’s lore and really only provides benefit if you are e diagnosing a paper tank, at that point you should be wiping and explaining what went wrong.