Main Deck : 40

Monsters : 19

X3 Alien Ammonite
X3 Alien Dog
X3 Alien Kid
X3 Alien Warrior
X2 Alien Grey
X2 Alien Telepath
Alien Overlord
X2 Genex Ally Birdman

Spells : 9

X2 "A" Cell Breeding Device
X2 Code A Ancient Ruins
X2 Swords of Revealing Light
Dark hole
Monster Reborn
Mysterious Triangle

Traps : 12

X3 Alien Brain
X2 Call of the Haunted
X2 Fiendish Chain
X2 Offering to the Snake Deity
X2 Planet Pollutant Virus
Mirror Force

Extra Deck : 15

X3 Cosmic Fortress Gol'Gar
X2 Genex Ally Triforce
Ally of Justice Catastor
Armory Arm
Brionic
Black Rose Dragon
Stardust Dragon
Mist Wurm
X2 Gem-Knight Pearl
Leviathan Dragon
Utopia

If anyone can help me improve this in any way, it would be greatly appreciated