Gem Mint 10 A Gem Mint 10 card is a card that has received a 10 grade overall
Characters cannot be used on the turn theyre played because, as the Lorcana rulebook says, You need to wait for their ink to dry! After waiting one turn, your now dry characters are free to challenge opposing characters in an attempt to deal enough damage to send them to the discard pile
Ancient Silver Dragon Prior commentary notwithstanding, Ancient Silver Dragon is a card to make the inner Timmy in all of us squeal
Enchantment Creature Nightmare When this creature enters or dies, exile another creature you control
This being said, especially in Modern, it's unique and broad enough that it has a reasonable chance of showing up in sideboards, at least in some decks
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