Unique Dragon: Draconian Bonekite.

The plan is to use defensive sites or draw a toolbox to create a wall of fire in the first 2-3 turns, then move to the middle of the board once enough air threshold is established to create tokens and/or start damaging the opponent with the Dragonlord’s ability. Once you’ve knocked down some life or at least ensured you controlled the opponent’s board presence enough you can cast Mephistopheles. Imagine a kill tower in the first half and then amassing a free army in the second.

I think this plays really well but open to recommendations in the comments.