94 cards in Heat Wave Arena:
Applin Arven's Greedent Arven's Greedent - 075/063 Arven's Mabosstiff ex Arven's Mabosstiff ex - 081/063 Arven's Mabosstiff ex - 088/063 Arven's Maschiff Arven's Sandwich Arven's Skwovet Arven's Toedscool Arven's Toedscruel Buizel Cornerstone Mask Ogerpon Crustle Crustle - 067/063 Cynthia's Feebas Cynthia's Gabite Cynthia's Garchomp ex Cynthia's Garchomp ex - 080/063 Cynthia's Garchomp ex - 087/063 Cynthia's Garchomp ex - 091/063 Cynthia's Gible Cynthia's Milotic Cynthia's Power Weight Cynthia's Roselia Cynthia's Roserade Cynthia's Roserade - 065/063 Cynthia's Spiritomb Dipplin Dondozo ex Dondozo ex - 078/063 Dwebble Electabuzz Electivire ex Electivire ex - 079/063 Electrike Electrike - 073/063 Emcee's Excitement Emcee's Excitement - 082/063 Ethan's Adventure Ethan's Adventure - 084/063 Ethan's Adventure - 089/063 Ethan's Cyndaquil Ethan's Ho-Oh ex Ethan's Ho-Oh ex - 077/063 Ethan's Ho-Oh ex - 086/063 Ethan's Ho-Oh ex - 090/063 Ethan's Magcargo Ethan's Pichu Ethan's Pinsir Ethan's Quilava Ethan's Slugma Ethan's Sudowoodo Ethan's Typhlosion Ethan's Typhlosion - 070/063 Floatzel Hearthflame Mask Ogerpon Heat Wave Arena Booster Box Heat Wave Arena Booster Pack Hydrapple Hydrapple - 068/063 Judge Judge - 083/063 Levincia - 092/063 Manectric Misty's Gyarados Misty's Lapras Misty's Lapras - 072/063 Misty's Magikarp Misty's Psyduck Misty's Psyduck - 071/063 Misty's Starmie Misty's Staryu Mudbray Mudsdale Pokemon Catcher Ponyta Rapidash Rapidash - 069/063 Rotom Rotom - 074/063 Sacred Ash Shaymin Shaymin - 066/063 Switch Tauros Teal Mask Ogerpon Wellspring Mask Ogerpon Yanma Yanma - 064/063 Yanmega ex Yanmega ex - 076/063 Yanmega ex - 085/063 Zeraora