At the heart of this deck lies The Ur-Dragon, your fearsome commander
Legendary Creature Raccoon Bard Mythic O-G Osahune 3/3 NOT LEGAL Standard NOT LEGAL Future NOT LEGAL Historic NOT LEGAL Timeless NOT LEGAL Gladiator NOT LEGAL Pioneer NOT LEGAL Explorer NOT LEGAL Modern LEGAL Legacy NOT LEGAL Pauper LEGAL Vintage NOT LEGAL Penny LEGAL Commander LEGAL Oathbreaker NOT LEGAL Standardbrawl NOT LEGAL Brawl NOT LEGAL Alchemy NOT LEGAL Pauper Commander LEGAL Duel NOT LEGAL Oldschool NOT LEGAL Premodern NOT LEGAL Predh During your turn, each non-Equipment artifact and non-Aura enchantment you control with mana value 4 or greater is a 4/4 Elemental creature in addition to its other types and has indestructible, haste, and "Whenever this creature deals combat damage to a player, draw a card."
Its no surprise that it returns for Midnight Hunt and features heavily in the werewolf tribe the set is based around
Until end of turn, gain control of target creature and it gains haste
While I could extoll the virtues of having access to the best colors for blink effects when building a Roon deck, or the ability to use them to blink powerhouses like Avenger of Zendikar, Craterhoof Behemoth, or Eternal Witness, Roon actually has a much more sinister claim to fame thanks to the rules change involving death triggers in 2020