Originally Posted by
Shurrikhan
My apologies if I'm misunderstanding what you're saying here, but... Zoe, Physis, and Krasis have no synergy with just those 3 things. Both Zoe and Krasis technically affect only GCD heals. Holos on someone affected by Krasis will heal within the standard deviation of regular Holos on someone with no such healing received buffs, and Zoe even specifies that it is consumed by only spells (GCDs), not abilities (oGCDs). For Zoe and Krasis to have synergy, you'd need to use a healing GCD, like Pneuma or EuP/EuD, giving it an 80% larger heal.
Pnuema is a spell, a 600p AoE spell, making it the best bang for your buck (over the 420 AoE potency from EuP) you can get out of Zoe as long as you don't need the maximum eHP increase of a shield to survive the next incoming hit.