If this card is in your hand or GY You can Tribute 1 Beast BeastWarrior or Winged Beast monster Special Summon this card but banish it when it leaves the field You can banish 1 Level 4 or lower Beast BeastWarrior or Winged Beast monster from your Deck this cards name becomes that banished monsters name also it becomes the same Type Attribute and Level as that monsters until the End Phase You can only use each effect of Cocatorium the Heavy Metal Avian once per turn
