Ramp with Wayfarers Bauble, Arcane Signet, Firemind Vessel, and Hedron Archive
From a gameplay perspective, it's incredibly easy to get out, immensely oversized on the battlefield, and resilient to removal, since you can cast it from the graveyard
Edgar Markov decks are notorious for snowballing, and they were already like that before recent cards like Warleader's Call added extra synergies to vampires with no reasonably alternative Mardu commander, which is a shocking lapse given the vast stack of legends published in the last few years
Nonetheless, Mirran Crusader is an incredible aggressor against Golgari (Green/Black) and Jund (Green/Black/Red) decks thanks to its protection from green and black
It hits over 94% of the creatures in my cube