By allowing them to die on the opponent's turn, the Armed Dragon player can search out the weak LV3 dragon when it is most safe, then tribute it at the start of the next turn
TCG pack opening gained substantial popularity during the pandemic as collectors and enthusiasts searched for fresh sources of excitement and community
Monarch decks live and die by their ability to effectively tribute summon monarch monsters to apply pressure to their opponents
See, all this swarming is in service of Pumpking the Great Ghost King, who is stellar removal (or a means to reset CotH) that also searches, and his most common target is appropriately Call of the Forgotten
This deck is a masterwork in how to take rather inexpensive cards and formulate them into something utterly beastly for your pod to work against
As a tribute to this, I name any card that cares about the top card of the library Banned in France