mtg arahbo roar of the world commander deck Arahbo, Roar of the World is in the command zone or on the battlefield MTG Commander Deck Cats EDH

Note: No cats, real or imagined, were hurt in the production of this riveting human drama

Zone-change triggered abilities that care about the new color (like "when a [color] permanent enters" or "when you cast a [color] spell") will work because those effects apply after the card is already in its new zone

If you have some cards in mind that you need to build around a new commander or upgrade one of the precons, it's probably best to pick them up soon because a lot of other players will likely be doing the same which can drive up prices

An aristocrat deck is one that sacrifices its own creatures for value, which is something that you will always want to be doing with a Sephiroth Commander deck