Jackiethederg
Spazmatism
I feel as if the dev team could've added the codex umbra as a part of the crossover. It would be a summoner weapon, and could create shadow replicas of the player. They wouldn't have armor or accessories equipped, with the only identifiable feature would be the hair and clothes style. Upon use, it would create one of three clones: one that runs up and attacks with a melee weapon, one that fires a bow at enemies, and another casting balls of shadows from a book towards enemies. I would suggest having it be a hardmode weapon, using souls of night to craft.