A great Vampire Deck to compete against most TCG and OCG decks.
Doomking Balerdroch allows for excellent control of the game once Zombie World is in place.
Doomking and DPE at the same time on the field requires a lot of resources from your opponent to get rid of the two that come back from the graveyard each turn.
Of course, what makes the Vampire deck great is taking control of your opponents' monsters (on the field or from the graveyard) for XYZ summon.
Any of your opponent's monsters to be considered level 6 or 8 for XYZ summon Vampire Sheridan and The Zombie Vampire.
It's almost always possible to set Doomking on first turn and to draw one card because of the effect of Vampire Sucker the next turn when he will come back from the graveyard.
Have fun!