Is a crystal beast deck good for dueling?

Should I make any changes to my Malefic Yugioh deck?

• This is the deck that I am currently using on Dueling Network. It's been doing really well, but any minor changes that anyone can find are what I am looking for. I have tested Gravekeepers Commandants, Upstart Goblins, and other typical Malefic deck cards, but I have found them inferior to the current cards that I am using. I am wanting to add a Bottomless Trap Hole or Dimension Slice somewhere, but I do not know what to take out. So here is the deck: Monsters (15): 3x Malefic Cyber End Dragon 3x Malefic Stardust Dragon 3x Beast King Barbaros 3x Thunder King Rai-Oh 2x Ancient Gear Gadjiltron Dragon 1x Beast Machine King Barbaros Ur Spells (15): 3x Pot of Duality 3x Terraforming 3x Geartown 2x Necrovalley 2x Mystical Space Typhoon 2x Trade-In Traps (10): 3x Skill Drain 3x Dark Bribe 1x Dimensional Prison 1x Solemn Judgment 1x Solemn Warning 1x Starlight Road Extra Deck (7): 3x Cyber End Dragon 3x Stardust Dragon 1x Number 39: Utopia Dueling Network Username: 0pTiK NiGHTmAR3

• Answer:

  I'd drop the Thunder Kings for cards such as D.D. Crows, Dimensional Fissure, or cards that do that. Drop Prison for Mirror Force and 1 Terraforming for a Monster Reborn. Take out either Ur or a Bribe or something else for a Dark Hole. Also, add XYZ's such as Gustaph and The Rank 8 XYZ's in case you use them.