Introducing the new rules Cross Duel shifts away from the official TCG ruleset in favor of more MOBA-like gameplay
They were obviously fighting between themselves

Raging Swordtooth Rampaging Geoderm Rampart Smasher Raph & Mikey, Troublemakers Ravager Wurm Ravager of the Fells Ravenous Tyrannosaurus Red XIII, Proud Warrior Redshift, Rocketeer Chief Regisaur Alpha Relentless Hunter Rhino, Barreling Brute Rhox Brute Riftburst Hellion Rip-Clan Crasher Rock Basilisk Rosheen Meanderer Rosheen, Roaring Prophet Roxanne, Starfall Savant Rubble Slinger Rubblebelt Raiders Rubblebelt Rioters Rubblebelt Runner Rubblehulk Ruby, Daring Tracker Ruination Rioter Ruination Wurm Rulik Mons, Warren Chief Rumbling Slum Ruric Thar, the Unbowed Rydia, Summoner of Mist Samut, Vizier of Naktamun Samut, Voice of Dissent Sarinth Greatwurm Savage Packmate Savage Ventmaw Savageborn Hydra Sawback Manticore Scab-Clan Giant Scab-Clan Mauler Scarlet Spider, Ben Reilly Scarwood Goblins Scuzzback Marauders Scuzzback Scrapper Security Rhox Segmented Wurm Shivan Wurm Skarrg Guildmage Skarrgan Skybreaker Sparkcaster Spellbreaker Behemoth Spider Manifestation Spined Sliver Stampede Surfer Stangg Stangg, Echo Warrior Stature, Young Avenger Stonebrow, Krosan Hero Strax, Sontaran Nurse Streetbreaker Wurm Strider, Ranger of the North Sunastian Falconer Sunder Shaman Svella, Ice Shaper Tahngarth, First Mate Tana, the Bloodsower Tannuk, Memorial Ensign Targ Nar, Demon-Fang Gnoll Tattermunge Duo Tattermunge Maniac Tattermunge Witch Terra, Magical Adept

Pros and Cons The big pro is that you get to pick which cards you want instead of rolling the dice