Don't rally dislike her, I just don't think I'll need a bishop in the near future. I already maxed the gold rarity dwarf (can't remember her name). Her power is reasonable and she give me more gold, which I'm always consuming.
I like Eterna not for her skills but her assets
I speculatively perfected her on the basis that she's a hot black. I won't be holding my breath waiting for buffs, but it's not like she's completely useless in the meantime, either, so whatever.