Game data updates to the wiki have been started.
A system has been added that will automatically add divination cards and other items to the item acquisition sections where appropriate. Entries added by this system will be shown as automatic in the item acquisition section.
Some pages will need to be updated to include
upgraded_from_disabled=true if they are not eligible for the system.
Some further details on what needs to be done can be found on Path of Exile Wiki:To-do list/Automatic upgraded from and issues can be posted on the talk page.
Immune to Elemental Ailments while you have Arcane Surge 
Arcane Blessing is a notable Ascendancy passive skill for the Hierophant. It applies level 1 Arcane Surge to the user when you or your totem hit an enemy with a spell. It also grants immunity to elemental ailments while under the effects of Arcane Surge.