If its pre-1998 with no symbol, look it up on Scryfall
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So, a Charizard Ex with a PSA 10 means that the seller paid to have it graded, and it's confirmed to be in mint condition
Leader Carrot can rest the adult brothers, allowing you to attack them
This deck can be very punishing to play, but once it gets on the board, it can prevent the opponent from making any progress
I think Endless One could be fine in a deck that has a focus on the +1/+1 counters on your creatures with cards like Avatar of the Resolute, but as a big payoff spell, the other options are miles better
