Akul the Unrepentant Amareth, the Lustrous Ao, the Dawn Sky Arcades Sabboth Arcades, the Strategist Atarka, World Render Atsushi, the Blazing Sky Bahamut, Warden of Light Beledros Witherbloom Betor, Ancestor's Voice Betor, Kin to All Bladewing the Risen Bladewing, Deathless Tyrant Chiss-Goria, Forge Tyrant Chromium Chromium, the Mutable Crosis, the Purger Darigaaz Reincarnated Darigaaz, the Igniter Dragon Man, Reformed Robot Dragonhawk, Fate's Tempest Dragonlord Atarka Dragonlord Dromoka Dragonlord Kolaghan Dragonlord Ojutai Dragonlord Silumgar Drakuseth, Maw of Flames Dromar, the Banisher Dromoka, the Eternal Ebondeath, Dracolich Fang, Roku's Companion Fin Fang Foom Firkraag, Cunning Instigator Gadrak, the Crown-Scourge Galazeth Prismari Ganax, Astral Hunter Grendel, Spawn of Knull Herigast, Erupting Nullkite Hidetsugu and Kairi Hraesvelgr of the First Brood Icingdeath, Frost Tyrant Inferno of the Star Mounts Intet, the Dreamer Iymrith, Desert Doom Jugan, the Rising Star Junji, the Midnight Sky Kairi, the Swirling Sky Karrthus, Tyrant of Jund Keiga, the Tide Star Khorvath Brightflame Klauth, Unrivaled Ancient Kokusho, the Evening Star Kolaghan, the Storm's Fury Korlessa, Scale Singer Korvold, Fae-Cursed King Korvold, Gleeful Glutton Kura, the Boundless Sky Kyodai, Soul of Kamigawa Lathliss, Dragon Queen Livaan, Cultist of Tiamat Lorehold, the Historian Lozhan, Dragons' Legacy Malfegor Miirym, Sentinel Wyrm Nadaar, Selfless Paladin Neriv, Crackling Vanguard Neriv, Heart of the Storm Nicol Bolas Nicol Bolas, the Ravager Niv-Mizzet Reborn Niv-Mizzet, Dracogenius Niv-Mizzet, Guildpact

There are options to name each one, change their card sleeves, copy or delete a deck, and of course, edit the cards
If either player put any cards on the bottom of their deck in this way, each player draws 4 cards
While there's a bit larger of a range for Darkrai, it trades comfortably in the high 20s, setting up a small but noticeable gap between it and the next card