You can copy public decks from others and customize them or draw inspiration from them, a really useful feature for learning new archetypes and strategies
Acid-Spewer Dragon Ancient Brass Dragon Black Dragon Bone Devourer Bone Dragon Boneyard Scourge Brainstealer Dragon Catacomb Dragon Deathbringer Regent Ebon Dragon Ebondeath, Dracolich Feral Deathgorger Grendel, Spawn of Knull Hoarding Broodlord Junji, the Midnight Sky Kokusho, the Evening Star Malevolent Witchkite Noxious Dragon Purging Stormbrood Scavenger Regent Scourge of Nel Toth Shinryu, Transcendent Rival Skithiryx, the Blight Dragon Skithiryx, the Blight Dragon Topaz Dragon Yiazmat, Ultimate Mark
These include the likes of Buster Whelp of the Destruction Swordsman, Sage with Eyes of Blue, and the White Stone of Ancients that give faster access to devastatingly-strong dragon cards
' effect, and it because it gives Endymion's Pendulum Effect something to destroy on turn 1