Cyberdark Cannon

If this card is sent to the GY while equipped to a monster: You can draw 1 card. You can only use each of the following effects of "Cyberdark Cannon" once per turn. ●You can discard this card; add 1 Machine "Cyberdark" monster from your Deck to your hand. ●During damage calculation, if a monster equipped with this card battles: You can send 1 monster from your Deck to the GY.