(I wish we had more team-up cards in that set!) TMNT goes all-in on team-ups
// Vigilance On turns where the effect of Summon: Yojimbo's second or third chapter ability is applying, your opponents can choose not to attack with a creature that must attack if able as long as there is no other player, planeswalker, or battle for that creature to attack that wouldn't require a cost
But to me, One with Nothing is THE example of how an iconic card need not be powerful or even widely playable
Because replacement effects are considered before Purphoros is on the battlefield, the mana symbols in its mana cost won't be counted when determining this
MTG Vaan, Street Thief Final Fantasy Borderless JP Foil NM
This is because there's another Booster Fun version of Okoa borderless versionand in general, our heuristic is to maintain the relative ratios of "Booster Fun versions of Oko" with "Booster Fun versions of other mythic rares." This means that if a card has multiple Booster Fun treatments, you're less likely to open any particular version, but you're just as likely to open a Booster Fun version of Oko as any other card overall