The Supreme King is now out. His skills and level up rewards make the Ex structure deck worthless. Also no super polly at level 45 just as a skill. : r/DuelLinks
Supreme King Dragon Deck 2020 - YGOPRODECK
Top 10 Supreme King Monsters in Yu-Gi-Oh - HobbyLark
Supreme King Dragon Darkwurm - Yugioh | TrollAndToad