Odds are you wont want or just wont have an unending number of vampires to put into play and you dont want those tokens to go to waste
(It cant be the target of spells or abilities your opponents control.) Matt
Where it really seeks strength is in decks with a lot of self-sacrifice like Aristocrats where you don't mind either side since you'll be sacrificing and bringing back a creature over and over again, and you'll gain life as a 1-drop or as a two-mana disturb
These three titans - Emrakul, Kozilek, and Ulamog - are featured in some of the strongest cards in Magic history
Maximize Your Tribe Generally speaking (and I'll get into a couple exceptions later), if you're going to be playing a ton of cards to make your tribe work, you should make sure you maximize the strong parts of your deck: the tribal parts
Let me know in the comments, or lets discuss it over on the Draftsim Discord