The only big factor here is whether you have artifacts worth copying, but if you build your deck right that shouldnt be an issue
Wurmcoil Engine 5 Just a good heavy card
Witherbloom Pestilence (BG): Sacrifice creatures for value, gain life, and build unstoppable momentum with synergistic counters and effects
Although Etched Champion was a card we picked up as a reprint in Modern Masters packs, its legacy in the game is actually through the Modern format, where it saw and continues to see play, in the Affinity archetype
Dont get me wrong, the difference between the usually 5 mana and 4 mana for this effect can make a difference, but you can only target things in your own yard
You could build an affordable amber army around Stitch, Rock Star using some low-cost amber cards, such as the one-ink Lilo, Making a Wish who gets you two lore every turn