A Deck by A Friend

this is it! and it goes to the route of locking opponents deck (at least that's how i use it)
Monsters: 18

3x GK Recruiter
3x GK Spy
3x GK Decendant
3x GK Commandant
2x GK Assailant
2x Malefic Cyber End Dragon
1x Malefic Stardust Dragon
1x Dark Armed Dragon

Spells:15

3x Necrovalley
3x Pot of Duality
3x Magical Dimension
2x Royal Tribute
2x GK Steele
1x Book of Moon
1x Dark Hole

Traps:7

3x Royal Decree
2x Solemn Warning
1x Mirror Force
1x Torrential Tribute

Extra Deck:5

2x Cyber End Dragon
2x Stardust Dragon
1x Utopia


Side Deck:15

2x Nobleman of Crossout
2x Dimensional Prism
2x Bottemless Trap Hole
2x Compulsary Evacuation Device
2x Effect Veiler
2x MST
1x Solemn Judgment
1x Starlight Road
1x Magic Drain

Why run Dark Armed Dragon alongside Necrovalley? He won't be able use hie effect with Necrovalley out. And why royal decree? If I am correct, Gravekeepers need trap cards such as bottomless trap hole and dimensional prison.

Abominable makes a few very good points, I will admit.

Otherwise instead of Dark Armed Dragon, you could use The End of Anubis
or even GK Visionary if you choose. You could also -1 Assailant and throw in
a GK Guard.

I'd take out Dark Armed, the Magical Dimensions and the Royal Decrees, for an Allure, a Solemn Judgment, 2 D-Prisons, 2 Bottomless Trap Holes, a Starlight Road and maybe a Compulsory.