Forum:Crystal Beast Deck! (need serious help)

Hey There! This is my first post in the forum, I was hoping to get some help. You see, Just recently I built a Crystal beast deck and so far, it's pretty ok, if people go easy on it. Now I know, the beasts aren't exactly an aggressive archetype, but I'm open to suggestions if anyone knows how to edit this deck to make it a little bit stronger. Thanks in advance!

Monsters (23)
Rainbow Dragon x1 Hamon Lord of Striking Thunder x1 Magna-Slash Dragon x1 Gravi-Crush Dragon x1 Crystal Beast Topaz Tiger x1 Crystal Beast Cobalt Eagle x2 Crystal Beast Ruby Carbuncle x2 Crystal Beast Emerald Tortoise x3 Crystal Beast Sapphire Pegasus x1 Crystal Beast Amber Mammoth x2 Crystal Beast Sapphire Cat x2 Seismic Crasher x1 Dweller in the depths x3 Cats Ear Tribe x2

Spells (16)
Ancient City Rainbow Ruins x3 Axe of Despair x1 Crystal Promise x2 Crystal Abundance x3 Crystal Beacon x3 Crystal Blessing x2 Terraforming x2

Traps (6)
Rainbow Gravity x2 Rainbow path x1 Crystal Pair x1 Torrential Tribute x1 Crystal Raigeki x1

And that's the deck. I'm open to suggestions.