I've found that Skink Priests are quite handy at defending themselves on the fulcrum, outside of combat of course.
I've found that in every Storm of Magic game I've played my opponent has sent their big flying beasties towards my fulcrums, and guess who is weak to the Lore of Heavens?
Also they have an amazing remains in play cataclysm spell that is probably at least as useful as Throne of Vines. I can't remember the name but it affects all friendly wizards and allows you to re-roll casting and dispel dice, perhaps also channeling not too sure on them.
I've managed to take down a chimera, cockatrice and a pack of harpies on their way to bother my priest just by targeting them with the lore of heavens. Of course if they get into combat you have to pray to the dice gods you roll well on your ward save lol.