Help with zombies

[Shadowreaper]

I have both starter decks of zombies, Zombie Madness and Zombie World. What can i do to make them one powerful deck/ what cards should I add?
Thanks.


Zombie Madness

Monster Cards
Vampire Genesis
Master Kyonshee
Vampire Lord
Dark Dust Spirit
Pyramid Turtle (x3)
Spirit Reaper
Despair from the Dark (x2)
Ryu Kokki (x2)
Soul-Absorbing Bone Tower
Vampire Lady
Double Coston
Regenerating Mummy (x2)

Spell Cards
Snatch Steal
Mystical Space Typhoon
Giant Trunade
Nobleman of Crossout
Pot of Greed
Card of Safe Return
Heavy Storm
Creature Swap (x2)
Book of Life (x2)
Call of the Mummy (x3)
Reload (x2)
Trap Cards
Dust Tornado
Torrential Tribute
Magic Jammer
Reckless Greed
Compulsory Evacuation Device (x3)

Zombie World

Monsters
Red-Eyes Zombie Dragon
Malevolent Mech - Goku En
Paladin of the Cursed Dragon
Gernia
Patrician of Darkness
Royal Keeper
Pyramid Turtle(x2)
Master Kyonshee
Spirit Reaper
Getsu Fuhma
Ryu Kokki
Regenerating Mummy(x2)
Des Lacooda
Marionette Mite
Plague Wolf
Zombie Master(x2)

Spells
Zombie World
Spell Shattering Arrow
Cold Wave
Magical Stone Excavation
Card of Safe Return
Creature Swap
Book of Life
Call of the Mummy
Terraforming
Pot of Avarice
Shrink
Field Barrier
Soul Taker
Ribbon of Rebirth
Card Destruction

Traps
Imperial Iron Wall
Dust Tornado
Bottomless Trap Hole
Tutan Mask
Waboku
Magical Arm Shield