>>96322644
step 1: don't build grand arbiter
step 2: find a commander you like
step 3: look them up on edhrec and click one of these tags on your commander page. this is important, because it will filter the cards below for ones that are used in decks for that strategy
step 4: scroll down and start adding cards to moxfield. Start off with the interaction, removal, boardwipes, lands so you know exactly how much space you have to work with
step 5 (optional): click on the "combos" button on edhrec under your commander. add at least 2 of the most used combos with your commander