While face down they count as colorless enchantment, regardless of what their face-down side is, and they do nothing else
If you gain an amount of life "for each" of something or "equal to the number" of something, that life is gained as one event and Aerith Gainsborough's second ability triggers only once
Ive owned several Exodus test prints, but my favorite ones are the 8th Ed
Like the lore, you have to put a stake in the heart of this one, or else it's going to rise from the grave and cause you problems
Wandertale Mentor and Muerra, Trash Tactician provide extra mana and are glad to help further once you start spending that mana
Getting him out is a costly endeavour, as Extus found, requiring either eight mana, two mana, and three sacrifices, or something in between