You can either repace every single art with the guide below, or just save the arts you want to use to your favorite folder, then when building the deck in the Deck Editor click Customize Images
This Aetherdrift Eternal Might Commander Deck includes 1 deck of 100 Magic cards (98 nonfoil cards and 2 Traditional Foil Borderless Legendary cards), a 2-card Collector Booster Sample Pack (contains 1 Traditional Foil or nonfoil alt-border card of rarity Rare or higher and 1 Traditional Foil Uncommon card), 10 double-sided tokens, 1 deck box (can hold 100 sleeved cards), 1 strategy insert, and 1 reference card
If you want to know more, just follow this reference from mtg.fandom
Card Synergy Explained Enablers, payoffs, and engines
The first, much like Goldspan DragonGoldspan Dragon, features some minor protection if your foe tries to remove Terror of the PeaksTerror of the Peaks--they must pay 3 life for the privilege of killing it
Remember, a Pokemon needs to be in play for a full turn before you can evolve it