Weeeeeeeell, lets start out with something a bit salty, Basilisk Collar
If you cant pony up the $300 price for a box and dont care about Standard, I recommend Jumpstart instead
Complementing your dragon army are an array pf spells, including removal options like Swords to Plowshares, Mortify, and devastating board-clearing effects such as Earthquake
Extirpate and Surgical Extraction are awesome with eldrazi/affinity decks, if I can exile Urza's Mine / Urza's Tower or something like Mycosynth Lattice my opponent can't play its game
Unlike your commander, if a companion dies, it is dead for good
Summons needed to feel important, powerful, and like they could turn the tides of battle before vanishingjust like in the games! wrote Dillon Deveney, a principal narrative game designer on Universes Beyond in a separate post