Why are you trying to have a Zombie World deck with only a single copy of ZW?
I would change this out, to make 3 ZW and 2 Terra. Then after that, replace 'usless' cards. By that, I mean...
gernia
patrician of darkness
royal keeper
master kyonshee
regenerating mummy
spell shattering arrow
magical stone excavation
card of safe return (good card, but banned D:)
Soul Taker
Imperial Iron (Messes with Book of Life, wich you should run more of)
Dust Tornado (only if you run 2 MST would you)
Tutan Mask
Waboku (good card, just not here)
Take all those out, and change it up.