As far as I understand, Bands with Other restricts banding to working with other creatures of a given quality, such as Green creatures or legendary creatures
However, you can also aim to overwhelm your opponents with your various Knights all equipped pretty evenly much like my final loss for the Arena event
You can read all about it here, but the TL;DR is that I made this deck for my oldest son (9) for him to learn the game
Its just some great value with a repeatable tutor strapped on
3 Wish 4 Pyretic Ritual 4 Manamorphose 4 Ruby Medallion 4 Runaway Steam-Kin 2 Spirebluff Canal 4 Strike It Rich 4 Reckless Impulse 4 Wrenn's Resolve 4 Ral, Monsoon Mage 4 Riverpyre Verge 1 Gamble 4 Jeska's Will 4 Riverglide Pathway 1 Past in Flames 1 Echo of Eons 1 Storm of Memories 7 Mountain 1 Tormod's Crypt 1 Untimely Malfunction 1 Tendrils of Agony 1 Past in Flames 1 Grapeshot 1 Meltdown 1 Echo of Eons 1 Galvanic Relay 1 Brotherhood's End 1 Into the Flood Maw 1 Underworld Breach 1 Storm of Memories 1 Raphael's Technique 1 Flashback 1 Expropriate Alongside Ruby Storm , a few decks round out the most popular strategies, including Boros Auras, Jund, Dimir Tempo, and Izzet Phoenix