Tributes:6
3 Goldd, Wu-Lord of Dark World
3 Sillva, Warlord of Dark World

Monsters:16
3 Broww, Huntsman of Dark World
2 Gravekeeper's Assailant
2 Gravekeeper's Spy
1 Morphing Jar
1 Sangan
2 Mystic Tomato
2 Don Zaloog
1 treeborn frog
1 magician of faith
1 breaker the magical warrior

Spells:14
2 Necrovalley
2 Terraforming
2 Smashing Ground
1 Graceful Charity
1 Heavy Storm
3 Dark World Lightning
1 Card Destruction
1 Confiscation
1 Pot of Avarice

Traps:6
Mirror Force
Ring of Destruction
Torrential Tribute
3 Sakuretsu Armor

The deck looks good for a Dark World deck, but just wait for the next set of boosters.