because it's good if you play darkworld monsters since you get your monster effects off and it can potentially throw your opponent off guard with the surprise hand card discard.
So you start with 2 dealings 1 brow 2 snow.
Use one with brow to draw 2 cards with brow effect use other on snow add third dealings. That’s 4 cards already added to hand from deck and you’ve discard 2 cards.
Now add in anything I drew like dragged down dark smog etc. trance arch. Discard another snow or that ceruli I got then discard rein hitting for 4500 and I got rid of sphere and such.
That’s why it’s ur because with anyone who know directly the way to play dw it’s the god card for them without any gates added. I’ve won against shadoll that way just by drawing into a dealings.