I would definitely put the Background cards Acolyte of Bahamut and Dragon Cultist in the 99 of my Miirym deck, Adventures in the Forgotten Realms Keeping with the D&D theme, we can dip back to Adventures in the Forgotten Realms for a nice selection of good Dragons
The Prince - Never Gives Up is a great card in aggro decks and so we will add 2 more of him
The Peregrine Dynamo can also be effective for legendary sources specifically
Every hour, at the turning of the glass, its owner had whispered to the locket, seeding it with secrets
And once you achieve the seven card minimum, you've actually got a pretty powerful, difficult-to-deal-with attacker
He costs five mana to play (three colorless, one black, and one green) and comes in as a 2/4 that generates a Food token