Assuming the mechanic works similarly with other cards in the set, one ability will add brick counters to the artifact while another will only activate once the artifact is built
In white, the go-to card is always going to be Swords to Plowshares
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Chandra, Fire of Kaladesh isnt a terrible commander, but it probably wont have a huge impact unless youre able to flip it into Chandra, Roaring Flame and get off an ultimate ability
The Amber/Emerald deck certainly has its merits, though, and I found their foils to be more helpful overall and the cards here felt more aggressive in the games I played than the Ruby/Sapphire cards did
I was happy to sell rares for $0.25/each to members of my local Magic community