Cyberdark Claw (SDCS-EN017) - Structure Deck: Cyber Strike Unlimited

If this card is sent to the GY while equipped to a monster: You can target 1 "Cyberdark" monster in your GY; add it to your hand. You can only use each of the following effects of "Cyberdark Claw" once per turn.
• You can discard this card; add 1 "Cyberdark" Spell/Trap from your Deck to your hand.
• During damage calculation, if a monster equipped with this card battles: You can send 1 monster from your Extra Deck to the GY.