In a recent hotfix, the new Spore Tender enchant for healers has been massively nerfed, reducing its effects by 72%.
Thanks to Voulk for pointing this out.
Spore Tender Enchant Nerf
The Enchant Weapon – Spore Tender was a brand new enchant in Patch 10.1 and it looked like every healer was going to run it in high end raiding and Mythic+ as this enchant was very very potent. It provided a massive amount of secondary stats to affected targets, but didn’t do much to themselves.