pokemon tcg twilight masquerade booster box Pokémon TCG: Scarlet & Violet—Twilight Elite Trainer : Toys & Games as well as one of four unique foil promo cards to boost your Prerelease deck Scarlet & Violet - Twilight

Garchomp ex can be obtained from Deluxe Pack: ex pack in the Deluxe Pack: ex set

If you want a specific creature, cards like Chord of Calling are just better

First, while you can play any number of Trainers on your turn, some Trainers are also Supporters, and you can only play 1 Supporter per turn

Altanak, the Thrice-Called Anara, Wolvid Familiar Brokkos, Apex of Forever Brokkos, Apex of Forever Fortune, Loyal Steed Gahiji, Honored One Galian Beast Illuna, Apex of Wishes Illuna, Apex of Wishes Kaheera, the Orphanguard Kethek, Crucible Goliath Kona, Rescue Beastie Lagorin, Soul of Alacria Loot, Exuberant Explorer Loot, the Key to Everything Loot, the Pathfinder Marath, Will of the Wild Migloz, Maze Crusher Nethroi, Apex of Death Nethroi, Apex of Death Nyla, Shirshu Sleuth Otrimi, the Ever-Playful Questing Beast Ragnarok, Divine Deliverance Red XIII, Proud Warrior Slinza, the Spiked Stampede Tayam, Luminous Enigma Uril, the Miststalker Uurg, Spawn of Turg Yannik, Scavenging Sentinel

As for the Equipments and Auras themselves

This totals about 6-7 new products a year