Its just sometimes you dont want the list to be all the same thing, because who wants the original five Moxes taking up a third of the Top 15 cards all-time list
So the enchantment turns one of your minions into a ghost that can only be blocked by other holy paladins
The only difference is that this card causes loss of life, while the other deals damage
Chainers Edict, Consuming Vapors, Custodi Lich, Dead Drop, Devour Flesh, Diabolic Edict, Gatekeeper of Malakir, Geths Verdict, and others are among just a few of the spells that can cause an opponent to sacrifice a pro-black critter
Clearly the pull rates must be low as well, but this cards value also indicates that Konami can still drive collector demand when they support powerful new cards with original animation
Aether Theorist: Versatile, and solid in all formats