If you like attacking every turn and rushing the opponent down, choose Red (e.g., Leader Shanks )
Sure, you will need ten or more energies to start OHKOing some of the Pokemon with higher HP, but you can still take out a few lower HP Pokemon with some strategic attacks

Approach of the Second Sun As Luck Would Have It Azor's Elocutors Barren Glory Battle of Wits Biovisionary Call the Spirit Dragons Central Elevator // Promising Stairs Central Elevator // Promising Stairs Chance Encounter Coalition Victory Darksteel Reactor Doctor Doom, Unrivaled Duelists' Convocation International (playtest) Epic Struggle Felidar Sovereign Form of the Approach of the Second Sun Gallifrey Stands Halo Fountain Happily Ever After Hedron Alignment Helix Pinnacle Hellkite Tyrant Jace, Wielder of Mysteries Laboratory Maniac Laboratory Maniac Liliana's Contract Luck Bobblehead Mayael's Aria Maze's End Mechanized Production Mortal Combat Near-Death Experience Now I Know My ABC's Ramses, Assassin Lord Revel in Riches Shinryu, Transcendent Rival Simic Ascendancy Test of Endurance Thassa's Oracle The Cheese Stands Alone Triskaidekaphile Twenty-Toed Toad Wowzer, the Aspirational (playtest)

Competitive players tend to buy single cards that they need on more reputable sites, and they dont buy big collections like this on Craigslist or eBay
Red/Purple Law Theres absolutely no question that the Red/Purple Law deck is the deck to beat right now