Its like a finger trap: The more they play the game, the more rewards you reap
Isshin, Two Heavens as One Isshin has a simple but powerful effect that can actually do some cool things in various Mardu lists
Its correct to play it sometimes (usually with town synergies), but losses to this kind of thing are just the worst feeling in Magic
Oh, its on the Reserved List
Gunk Slug is a neat design thats so frustrating to play against (I think its based on custom cards once played at a convention by Richard Garfield, though it mightve been Rosewater)
Of course, I've mentioned how it's an ok EphemerateEphemerate target, but it's not a primary one, so you might end up having to choose between flickering a card with a good triggered ability and trying to cushion the huge mana investment