Trainer cards support gameplay with effects or tools
There are plenty of cosmetic items in Arena, and I get to an exhaustive list a bit further down
Be wary of nights when the starlight is bright. Attacks Mind Bend20 Your opponent's Active Pokmon is now Confused
Multiple cards sacrifice creatures to grow your board, but the decks not so token-heavy that it can just toss fodder away, and you dont really want to pump up your board at the expense of losing your creatures
Booster Pack "Black Bolt" 3
Jonah Jameson 1 Madame Web, Clairvoyant 1 Mary Jane Watson 1 Masked Meower 1 Miles Morales Flip 1 SP Piloted by Peni 1 Scarlet Spider, Ben Reilly 1 Scarlet Spider, Kaine 1 Silk, Web Weaver 1 Skyward Spider 1 Spider Manifestation 1 Spider-Bot 1 Spider-Girl, Legacy Hero 1 Spider-Gwen, Free Spirit 1 Spider-Man 2099 1 Spider-Man India 1 Spider-Man Noir 1 Spider-Man, Brooklyn Visionary 1 Spider-Man, Web-Slinger 1 Spider-Punk 1 Spider-Rex, Daring Dino 1 Spider-UK 1 Spiders-Man, Heroic Horde 1 Starling, Aerial Ally 1 Superior Spider-Man 1 Supportive Parents 1 Symbiote Spider-Man 1 Web-Warriors 1 Wraith, Vicious Vigilante Instants (10) 1 Amazing Acrobatics 1 Arachnogenesis 1 Secret Identity 1 Spectacular Tactics 1 Spider-Sense 1 Strength of Will 1 Sudden Strike 1 Terrific Team-Up 1 Whoosh