It's just Miirym has a high casting cost at six, which sets this deck back
(Scryfall note) A card, spell, or permanent is historic if it has the legendary supertype, the artifact card type, or the Saga subtype
In this table, each archetype name hyperlinks to a top-performing decklist that closely reflects its aggregate build
So, with different type of tin available and each containing different combinations of booster packs and accessories, heres each one in turn, listed from largest to smallest, with details of what we think the advantages and disadvantages are of each type
More specifically, I fear the damage ability on Sorin, Ravenous Neonate
You can't choose any permanent cards entering the battlefield at the same time as that Aura