If only your opponent controls a monster, you can Special Summon this card (from your hand). If this card is Normal or Special Summoned (except during the Damage Step): You can Fusion Summon 1 Fusion Monster from your Extra Deck using this card and 1 monster in your hand as material. If this card is used as material for a Fusion Summon, except by its own effect: Target 1 Special Summoned monster on the field; send it to the GY. You can only use this effect of “Energized Protodermis Chamber” once per turn.
