Temur Spells and Mardu Humans come out on top in our artifact ranking since rather than just three good artifacts, both decks got four, although Temur Spells edges out Humans for the top spot since Lightning Greaves and Twinning Staff are much more valuable than Skullclamp and Sanctuary Blade
Since you can just bring this Miku, Child of Song, back after she has been killed as per Commander rules, you can make use of its ability again as many times as you like, with the only caveat being a simple increase in mana cost to bring her back each time
Once this is done you discard the song card, just as you do with action cards
And the eBay situation with selling cards was doing just as good as what I was getting paid. So he quit and turned to card collecting and reselling full time
She likes to play long games and grind value from repeatedly sacrificing and reanimating her own creatures, which in turn, creates value through the other engines in the deck