Treat comparisons as a curiosity, not a target
It takes any Vampire deck and gives them different modes of attack, as the -3 ability can immediately accelerate a larger threat on the battlefield that your opponents must deal with immediately
There are also a couple one-off elder dragons: Modern Horizons 2 printed Piru, the Volatile as the first wedge tri-color elder dragon, and Final Fantasy Commander brought us Hraesvelgr of the First Brood
Queen Marchesa is the best token commander that gives you card advantage while providing a reliable production of Assassin tokens to pressure your opponents
Valgavoth, Terror Eater would fit well in a control or midrange deck that focuses on utilizing its ability to manipulate the graveyard and generate card advantage
For aspiring Judges, the Comprehensive Rules (section 702.53) provide even more detail for the ability