Cerulean Skyfire (SGX3-ENG11) - Speed Duel GX: Duelists of Shadows 1st Edition

To Special Summon "Hamon, Lord of Striking Thunder" using its own procedure, you can also use face-down Spells you control. Once per turn, while you control an Attack Position "Hamon, Lord of Striking Thunder", you can negate any Spell/Trap effect activated by your opponent, then, change 1 "Hamon, Lord of Striking Thunder" you control to Defense Position. If a face-up "Uria, Lord of Searing Flames", "Hamon, Lord of Striking Thunder", or "Raviel, Lord of Phantasms" you control leaves the field: You take no damage this turn.