nessa pokemon card full art - 118/100 (118/100) Encased in a durable acrylic holder to highlight the vibrant artwork of this fan PSA 8 - Pokemon Card

You'll want to increase your Dragon count to ensure that happens with each foe, and note that this is just once per attack no matter how many attack

RLS Legacy - Solar Galleon - Enchanted Rare Lorcana Into The Inklands has introduced Location cards and they didn't waste any time introducing them as Enchanted cards

Creature - Giant

Don't put more than 60 cards in your deck unless you use a specific ability like Yorion, Sky Nomad or Battle of Wits

There are narrow exceptions where a judge may issue a proxy during an event if a card is accidentally damaged, but thats not the same thing as bringing your own proxies

As for the Mythic Invitational itself, I would call the event a modest success