They mainly appear on artifacts and are used to generate energy or pay certain costs
BPhillipYork: It's kind of neat because it's cheap and just sits there, you know you'll cast your Commander at some point, or it's to super power something you're cheating out
and jump into your first Duel, youll need a Main Deck, optionally a Side and Extra Deck, and a couple of essentials like a coin, tokens, and sometimes dice (based on what you and your opponent are running)
Check print sharpness (fakes look blurred), card texture (authentic holos feel distinctly smooth), card thickness (fakes feel wrong), back color gradients (fakes use flat uniform blue), and Japanese text spacing (fakes show inconsistencies)
I mean, apart from that way too human smile, he kind of just looks like an egghead on a puppet body