This is Blue-Eyes Ultimate Spirit Dragon, the signature boss
Place the stack face down, and then take the top four cards of the stack and place each one face up to create the beginnings of *four separate piles.* Randomly determine who drafts first
It won't trigger for effects that aren't digivolution effects, such as BT4-011 [Agunimon]'s effect that treats a Tamer as a level 3 red Digimon or BT6-060 [Deputymon]'s effect that allows digivolution requirements to be ignored
I get that TappedOut has a very active custom card community - that community is probably the most active on the site - but you have to think about the limitations of the page you are using
In this deck, it serves as a way to find your reanimation targets and dump them into the yard at a low cost
If you have the likes of Articuno ex, Starmie ex, or Lapras ex, its definitely worth throwing them in here and using them