Vampires are usually found in red, black, or white colors, or all three, like one of their best commanders, Edgar Markhov, found in the Mardu MTG color combination
March of Otherworldly Light solves that problem, allowing you to have maindeck removal that deals with artifacts, creatures, or enchantments
Partner At the beginning of each combat, until end of turn, each other creature you control gets +1/+1 if it has flying, +1/+1 if it has first strike, and so on for double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, protection, reach, trample, vigilance, and partner
Let me know what cards you're most excited for, any sweet interactions I may have missed, yadayada
This, for many people, is the scary part
It isnt unplayable, though