As i told everywhere in the forum I like the idea of pillar with ability. Though this one seems pretty weak, not sure if 7 HP is enough.. Anyway cool idea I support it !
Well, Holy Light is 1
| 1
for 10 HP (normal), and this is 1
| 0 for 7 Max HP and generates quantum. I don't want to make the healing greater than or equal to Holy Light since it's overall cheaper and it compensates for less healing in a different way (by generating quantum and healing Max HP).
Also, sacrifice would only be a single card, right? Not the entire stack. And considering how that would work, would it enable multiple uses per turn?
Yes, sacrifice would only sacrifice a single pillar and can be used multiple times per turn. (Keep in mind it takes at least 3-4 of these to equal the healing value of a Heal or SoD and that these will likely be doubling as pillars for your deck.)