Lightray Gearfried (GAOV-EN034) [Galactic Overlord]

Cannot be Normal Summoned or Set. Must be Special Summoned (from your hand) by having 5 or more LIGHT monsters with different names in your Graveyard, and cannot be Special Summoned by other ways. Once per turn, during either player's turn, when a Spell/Trap Card is activated: You can banish 1 Warrior-Type monster from your Graveyard; negate the activation, and if you do, destroy it. All face-up monsters you control must be Warrior-Type to activate and to resolve this effect.