Love this dude
Each of these are alternate versions of cards in the standard set, but with differing artwork and effects
If you have other creatures to sacrifice to Sephiroth, you can pump up Aerith into a very chunky lifelinker that your opponent doesn't want to kill
If you follow that up with Pack Tactics, you've just made a perfect storm for your opponent by putting them at a willpower disadvantage and allowing you to surge ahead in lore
Either way, its a powerful pickup for Knight, token, or white-based Commander decks, and one thats likely to remain popular
For instance, a character might generate one example token every turn theyre on the board, and when they get to three of them, you can discard the tokens to banish a character