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My jaw went slack when I saw this glow-up in the Pokmon Pocket announcement trailer

Toski, Bearer of Secrets is another heavily-played Commander card in this vein

Set: Avatar: The Last Airbender Printing: Foil Increase: +$288.27 Current Market Price: $3,832.64 Avatar Aang remains one of the best ways to put all of your Avatar cards in one singular Commander deck, but its very likely that this particular printing is going up purely as a collectors item, rather than because of the card itself

This card is well worth its $16 price tag, and could easily increase in price significantly if it ever gets unbanned in Commander

You've had no effect on what your opponent is doing

Most often it is a promo card (look for a black star and the word PROMO), a Japanese card (which uses letter codes instead of shapes), or an older or non-standard print