The Sacred Beast Hamon would be very useful in this Deck because when a crystal beast is destroyed you can place him in Spell/Trap zone as a continous Spell card. You have just to have 3 crystals beast in your spell Zone and you can summon Hamon
I love crystal beasts they help me so much my monsters are always getting destroyed so Hamon easy to summon abundance saved me as well I love this deck it annoys the hell out of people.
I won 3 tournaments in a row with the crystal best deck I lost my first match at the place to blackwings cause he got a killer hand so my record it 16-1 yeah they never win