At the very least, board sweepers remove a big problem and reset the game
Throw in the chip damage that activates whenever he buffs, and the end result is a creature that many fans were shocked ever got printed
No list of the best attack triggers for Isshin would be complete without Etali, and Etali might even be the reason you build Isshin in the first place
Perhaps you love that kind of adversity, and you know your playgroup runs very resource-efficient decks with varied answers for permanents that are unlikely to be completely stalled by a turn-two Sire of Insanity
Each time Gollum dies, the Ring tempts you, suggesting that perhaps you'll want to be tempted, at least in some decks
But I promise its still a good enough card