Dragonlord Silumgar get creatures which somehow make it to the opponent's field, and Dragonlord Ojutai has hexproof when untapped. Narset Transcendent has a good +1 with an amazing ulti. Although they're overpriced, they will go down and be the new meta.

buttergolem - Aye, the reason they aren't on there is price, and I doubt Narset Transcendent will go down much until she rotates; even then she will be a "collectors' item" (frowny face), but even then, that is way too late considering I want this ready for DTK game day.

I wouldn't mind Dragonlord Silumgar as a one-of for the sideboard, but running Dragonlord Ojutai pushes this deck closer to the really-not-so-budget mark.