MAIN DECK

Monsters:
1 Gravi-Crush Dragon (2400/1200)
1 Magna-Slash Dragon (2400/1200)

2 Crystal Beast Amber Mammoth (1700/1600)
2 Crystal Beast Topaz Tiger (1600/1000)
2 Crystal Beast Cobalt Eagle (1400/800)
3 Crystal Beast Amethyst Cat (1200/400)
1 Sangan (1000/600)
2 Crystal Beast Emerald Tortoise (600/2000)
2 Crystal Beast Ruby Carbuncle (300/300)

Spells:
1 United We Stand
1 Swords of Revealing Light
1 Nobleman of Crossout
1 Mystical Space Typhoon
1 Mage Power
1 Heavy Storm
2 Crystal Promise
2 Crystal Blessing
2 Crystal Beacon
2 Crystal Abundance
2 Ancient City - Rainbow Ruins

Traps:
1 Torrential Tribute
1 Ring of Destruction
1 Mirror Force
1 Gem Flash Energy
2 Crystal Raigeki
1 Call of the Huanted
1 Assault on GHQ

SIDE DECK

Monsters:
1 Hamon, Lord of Striking Thunder (4000/4000)

1 Crystal Beast Amber Mammoth (1700/1600)
1 Destiny Hero - Diamond Dude (1400/1600)
1 Crystal Beast Cobalt Eagle (1400/800)
1 Crystal Beast Ruby Carbuncle (300/300)

Spells:
2 Tornado
1 Pot of Avarice
1 Field Barrier
1 Crystal Promise

Traps:
3 Last Resort
2 Gem Flash Energy

You better throw some 7 tools or solemn in the side for when i side in spell purification against you. :classic:

Your diamonds won't last another minute if you don't have Topaz Tiger or Sapphire Pegasus.

Definitely out with United We Stand,Swords of Revealing Light,Mage Power,Heavy Storm,Gem Flash and Assault on GHQ.

Don't side Hamon.Use cards like Pulling The Rug and Cursed Seal in your side deck.

I have Topaz Tiger.
All the spell cards you suggested I take out have done very well in the maindeck.

However (so I can test it out and see the differences) what do you suggest I mainboard instead?

I can see dropping Assault on GHQ.

NOTE: I do NOT have Pegasus due to the costs.

Would it help knowing any other cards I have?