It synergises well with the white ally token strategies already present, and being mono-white makes it far easier to slot into a wide range of Commander decks
During upkeep, your opponent may choose instead to sacrifice a permanent to add another two time counters to Curse of the Cabal to keep it exiled for a couple more turns
Replacing itself in your hand like a cantrip makes it great for keeping pace with the rest of the table, too
A previous auction for an unopened booster box has sold for US$54,200 while individual cards from the packs have gone for as much as US$55,650 (and yeah, it was a holographic Charizard)
I think at its current price, the odds that it tanks more are far less than the odds it gets picked up either when people come around or when something gets printed that uses this
DeNA has done a great job targeting issues with the battle system, such as introducing Baby Pokmon that alleviate the disadvantage of going first if youre running a deck with them