While there are other cards that can do this, too
Mirkwood Bats also works with creature tokens and Clues/Food, so expect this card to fit lots of different decks and hit your EDH table often
Once he's on the backside, Kefka constantly refills your hand whenever your opponents lose life
Dismember takes precedent here over cheaper removal, as the Phyrexian mana alternative cost can be offset by us gaining some life casting it (much like Snuff Out)
Sometimes the artwork on the serialized cards is found on non-serialized versions, but most new serialized cards get their own artwork or frame to increase the specialness of the card, which seems like a great move
Looking past the idea that the deck could have included more alternate win conditions, 20 Ways To Win certainly seems worthy of purchase if you like the aesthetics of the mythological interpretation of the tanuki