Am I missing a crucial card draw card for the color pair
But its a nice unique design which gives it some bonus points in my book
I'd cut the following: Vega, the Watcher, Tasha, the Witch Queen, Mind's Dilation, Celestial Dawn, Lighthouse Chronologist, Restore Balance, Xanathar, Guild Kingpin, Dromar's Charm & Talent of the Telepath
Broodmate Dragon is very good at these tasks, because you get not one but two independent good creatures capable of dominating many boards on their own
The deck then adds powerful spells including counters (Essence Scatter, Refute), draw effects (Arcane Epiphany, Fleeting Distraction), and Aetherize which can bounce your opponent's army
Dina, Soul Steeper Dina, Soul Steeper is one of the most popular lifegain-oriented commanders out there, mainly because it has a pseudo-Sanguine Bond built in