Dragunity Knight - Trident (Duel Terminal) (Duel Terminal Technology Common) - Hidden Arsenal: Chapter 1 1st Edition

1 Dragon-Type Tuner + 1 or more non-Tuner Winged Beast-Type monsters

Once per turn, you can send up to 3 cards you control to the GY to look at your opponent's Extra Deck and send an equal number of cards to the GY.