Frightfur Sabre-Tooth (Ultra Rare)

1 "Frightfur" Fusion Monster + 1+ "Fluffal" and/or "Edge Imp" monsters When this card is Fusion Summoned: You can target 1 "Frightfur" monster in your GY, Special Summon it. All "Frightfur" monsters you control gain 400 ATK. If this card was Fusion Summoned using 3 or more Fusion Materials, it cannot be destroyed by battle or card effects.