Witherbloom Pestilence (BG): Sacrifice creatures for value, gain life, and build unstoppable momentum with synergistic counters and effects
Feldon of the Third Path Mono-red has come a long way since the early days of Commander, and there are a lot of fantastic creatures that you can put into a Feldon of the Third Path deck
And if youre iterating fast (because Commander never stops evolving), you can keep updating versions and reprinting the newest list without starting over every time.
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
The only big factor here is whether you have artifacts worth copying, but if you build your deck right that shouldnt be an issue