While you control it, cards that are "decorated" (which the card uses to refer to cards with "premium" foil, alternate art or frames, and promo cards) have a miracle cost of one snow mana (which means that you can play the card for one snow mana if it's the first card you drew that turn)
Forty partner commanders
Arbiter of the Ideal would be a great combo
I think this largely comes down to the fact that blue and green rely less on refill draw, and can get by with topping up easily and cheaply as a game progresses
(As they enter the field in the ready position.) Each card - both the challenger and the card being challenged - then deal damage to each other, equal to their strength value
Credit: Wizards of the Coast Agrus Kos, Eternal Soldier FromTheShire: A super cool new Commander, Agrus does a similar thing to some other very fun Commanders we've gotten in the past, but resonating abilities across your whole team is something we haven't seen before