Il Blud is able to Special Summon any monsters from your opponent’s Graveyard, if Zombie World is activated. Red Eyes Zombie Dragon is able to take control of any monsters it destroyed in battle, if Zombie World is activated. Gozuki is able to mill out zombie monsters to the Graveyard, to be Special Summoned by Il Blud. Despair of the Dark is a powerful beater and can be your option as an alternative to Red Eyes Zombie Dragon.
This card has similar functionality as Planet Pathfinder, so you may add Planet Pathfinder as well, if your deck is themed around searching Zombie World.
You can also use this card as a powerful level 4 beater, if you are able to successfully activate Zombie World through other means.
Beatdown! Boosts the ATK of face-up attack position monsters you control by 300 per level 5 or more monsters you control. You can only use the skill once per turn.