No, you need them to have a luck rune. If you have some levels in the talent rune magic, your units start with the appropriate number of runes. To see which ones they have, look at the rune icon in the unit screen (where the status effects like buffs are displayed). You can use the spell Runic Word to give them more runes.
Note that Gift currently requires a luck rune to activate, but uses up a defense rune (if available). This will probably be corrected in some patch...

I concede.

Gift only works for level 1-2 units as a scroll or level 1.

If you want to use it on Demonologist etc you will need to scribe and upgrade it.

I prefer Phantoming them and using rez as I go. If you have level 5 units, use a HEAL Level 3 to get them to max hp for that current unit THEN use rez from demonologist.

I think demonologist is level 4 so you need a lvl 3 Gift spell.

every unit which revives only has 1 charge of their revive ability, paladins 1 charge, inquistors 1 charge.. faun's 1 charge... demonologists 1 charge

Hi i'm still Gift. I am gifting that charge back...

Repair Droids reload, Shaman's Spirit Axes reload, so do Battle Maidens, and also Fauns have 2 charges.

But yeah, pretty much irrelevant when Gift is a thing.

yes it does, reason i'm using shamans with my black dragons

Is this new? I know they could heal, but not resurrect in Armored Princess.

Hang on. Doesn't Spirit Axe evenly divide healing between all your units? Assuming you had 5 stacks, that would mean you'd need to do 10,000 damage with Spirit Axe to fully heal a Black Dragon, right?