DEN-ON-BU Tama Kurogane

[Auto] : At the beginning of your attack phase, you may put three SIGNI from your Ener Zone into your trash. If you do, return target SIGNI on your opponent's field to its owner's hand.

[Enter] Discard a card: Look at the top five cards of your deck. Reveal up to one [DEN-ON-BU Aki Shirokane] or [DEN-ON-BU Ginka Haijima] from among them and add it to your hand, put up to one SIGNI into your Ener Zone, and put the rest on the bottom of your deck in any order.