Giving all your dragons indestructible means you can swing and block without fear, and the bonus of stacking +1/+1 counters every upkeep quickly snowballs, all on top of a potential alternate win condition
This Charizard is one of the rarest Pokemon cards ever due to a simple misprint: a missing shadow
POKEMON CARD GAME ILLUSTRATION CONTEST 2024 PROMO CARD [SV9A] - Japanese version From the enhanced expansion pack "Hot Wind Arena," a set of three promo cards of "Frog, Pikachu, and Cinderace ex," featuring the illustrations that won the Overall Grand Prize, Card Illustration Grand Prize, and ex Card Illustration Gran
Any creature you control that can't be targeted by the copied ability (due to protection abilities, targeting restrictions, or any other reason) is just ignored
This makes a ton of sense, given how easy it is to jack up a creatures power with Equipment cards