TCGPlayer, eBay, or bulk them to local stores or Facebook groups with proof of value
Your opponent is more likely to count your artifacts in play to see how much damage you can do if you already have Ravager or Plating in play, so by holding it when its not too useful on the board (say, if there are some blockers on the ground), you get to surprise your opponent with it when they use their mana on something else
Now Ive worked with a lot of card creation masters over the years, but at the end of the day I still enjoy making my own blank templates, and Im always perfecting my techniques
Najeela, the Blade-Blossom Najeela, the Blade-Blossom frequently sees play at cEDH tables because its activated ability is beyond broken
They have a strong passion for food and go on a quest to consume more delicious cuisine from around the world