Elenda and Azor is no slouch either, so this deck should operate fine with either commander at the head
The deck is chock-full of other instants you want to cast with Kalamax, from Chaos Warp to Temur Charm to the decks free commander spell, Deflecting Swat
If a creature affected by the first triggered ability of Impetuous Devils is tapped or is affected by a spell or ability that says it cant block, then it doesnt block
Others become fascinated with obscure Pokmon that few collectors ever think about
It's possible that, as brackets continue to increase in adoption, maybe this would be an acceptable Game Changer, though, even then, Upgraded decks don't want mass land denial around
If a creature that's no longer on the battlefield is instructed to explore, it can, as long as the spell or ability doing that resolves