Because it gives you hexproof as well, you cant be targeted by effects that could make you sacrifice permanents which would otherwise get around the hexproof on your creatures
Also, it is interesting to note that, considering the name pattern of the "True Kings", the Japanese name "V.F.D., the Beast" hints that this monster is an amalgamation of " V anisher", " F athomer" and " D isaster", but not "Mariamne", once she would represent the very opposite of the Antichrist and, thus, could not be a constituent part of him
Just make sure youve got a variety of card types to choose from or youll be stuck with a basically vanilla 3/3
They dont have an automated online buylist system
The right deck, which is full of cheap instants and sorceries, can easily delve this into play as early as turn 2 as a 4/4 or 5/5