Eye of Castle Sengir

{0}: Each player names a single type of creature
among permanents they control. Each player
who names the type with, or tied for, the least permanents of that type on the battlefield creates
a 2/3 black Vampire creature token with Flying, Lifelink, and Deathtouch. Target opponent gains control of Eye of Castle Sengir. Play this ability
as a sorcery and only once a turn.