vanguard booster box DZ-BT12 Chasm of Lost Souls and Over Trigger cards Cardfight Vanguard - Destined Showdown

That means all he has to do is take Battle Damage and have the right Tuner to Summon whichever of the Dragons he needs

EX2-003 U Digi-Egg Lv.2 Alternative Art Viximon Color Yellow Form In-Training Type Lesser Card Text 2 [Inherited Effect] [Your Turn][Once Per Turn] When you use an Option card with a cost of 2 or more, Draw 1

being able to search and dump any Level 6 or higher LIGHT or DARK monster from both Extra Deck or main deck means you have another way to manage and search your resource

This is really, really jarring, especially after you've just seen the low anime framerate cause the drawn D-Wheel to jerk onto the track in a rapid series of 1-metre hops