If you have a deck that needs ways to protect your commander, then Octopus FormOctopus Form could be for you
Im not convinced that Magic needs to constantly use such a mechanic, particularly when its one of the easiest keywords to be surprised and punished by
Number 1: Snow-Covered Lands Modern Horizons The first place goes to Snow-Covered Lands (all of them) from Modern Horizons
The times it has shone, it was a game changer, especially in Esper decks with Raffine, Scheming Seer
Mondrak, Glory Dominus is one of the best cards around for multiplying tokens, making the decks token-based attack even more potent
And you can also play different game modes with any card you want: Limited, Constructed Commander, even odd ones like Archenemy