Ceres first impression, for those on the fence:
Ceres copies your own unit (a Black Magic on your own units) and howl, of course. The fear effect is not very clear to see.
It’s like a combination of Aska (but you need to keep your troops alive to make it useful) and Howl (with smaller howl range). Healing units/spells is a good combination with Ceres.
Edit: Oh, I’ve just checked. FTB already has a video about it. So quick
These Pro Shop items should change more often, it’s already a pain to have to wait for them to appear again if you’ve missed them or didn’t have enough Crystals at the time. Most of the items here are great, too.