Mavren Fein, Dusk Apostle

Oracle Text

Whenever one or more nontoken Vampires you control attack, create a 1/1 white Vampire creature token with lifelink.

Card Rulings

9/29/2017 Once you attack with one or more nontoken Vampires, Mavren Fein’s ability will create a Vampire token even if some or all of those Vampires leave the battlefield or are removed from combat.