I like that you can build Ivy in multiple different ways: You can build it as a mutate commander, as an auras commander, or as a spellslinging, combat tricks commander
At lower power levels, stuff like Striped Riverwinder that can just cycle is also good at offering some cross-archetype playability
6 Tetsuo, Imperial Champion A creature that truly embodies the idea of weapon mastery associated with Samurai, Tetsuo offers a choice of two excellent effects whenever he swings in with a piece of equipment in his hands
One of the main arguments I see is that since Magic has already expanded beyond its own limits with novels, comics, video games (remember Magic Legends
A prominent example is the "Voltron" strategy, when the deck casts its commander and loads it up with powerful equipment and aura cards to create an unstoppable attacker