Evil HERO Infernal Sniper

[ Fiend / Fusion / Effect ] "Elemental HERO Clayman" + "Elemental HERO Burstinatrix" Must be Special Summoned with "Dark Fusion". Cannot be destroyed by Spell effects. Once per turn, during your Standby Phase: Inflict 1000 damage to your opponent. This card must be in face-up Defense Position to activate and to resolve this effect. ATK/ 2000 DEF/ 2500