Elemental Hero Avian + Elemental Hero Burstinatrix. This monster cannot be Special Summoned except with Dark Fusion. During battle between this attacking card and a Defense Position monster whose DEF is lower than the ATK of this card, inflict the difference as Battle Damage to your opponent. When this card destroys a monster by battle and sends it to the Graveyard, inflict damage to your opponent equal to the the ATK or DEF of the destroyed monster, whichever is higher.