Gem Born Dragons - Based off Luster Dragons

[Airride]

Luster Dragon #3 - WIND
***
Dragon
[i]Although small, this little dragon, powered by jade, can sneak past enemy Lines and is brutally powerful.[/i]
ATK/1700 DEF/1200

Luster Dragon #4 - WIND
*****
Dragon
[i]A mighty dragon that lives in a cave filled with rubies. He does not come out often, But when he does it means big trouble.[/i]
ATK/1900 DEF/2600

Luster Dragon #5 - WIND
*******
Dragon
[i]Born from the opals that are in the depths of the earth, this unbeatable dragon tears anything it sees to shreds.[/i]
ATK/2750 DEF/1950

Sapphire Born Dargon - WIND
****
Dragon/Effect
This card is also "Luster Dragon" While on the field or Graveyard. When this card destroys a monster by Battle: Target 1 Dragon-Type Monster in your Graveyard; Special Summon a Normal Monster with the Same name as it in Defence position, and Banish the Target.
ATK/1900 DEF/1600

Emerald Born Dragon - WIND
******
Dragon/Effect
This card is also "Luster Dragon #2" While on the field or Graveyard. While you Control another "Luster Dragon" Monster, besides "Luster Dragon #2": This card cannot be attacked or targeted for effects.
ATK/2400 DEF/1400

Jade Born Dragon- WIND
***
Dragon/Effect
This card is also "Luster Dragon #3" While on the field or Graveyard. Discard 1 "Luster Dragon" Card and Send 1 "Born Dragon" Card from your Deck to your Hand; This card can attack directly this turn. If it does, Change it to defense position at the End Phase. When this card is Destroyed by battle while in Defence position: Special Summon 1 Level 5 or lower "Born Dragon" or "Luster Dragon' Monster from your Deck.
ATK/1700 DEF/1200

Ruby Born Dragon - WIND
*****
Dragon/Effect
This card is also "Luster Dragon #4" While on the field or Graveyard. When this card is Summoned; Change it to Defense Position. When this card is changed to Attack Position during your turn, except by your own card effect: target 1 Dragon-Type Monster in your Graveyard; Destroy 1 Monster on the field, and Special Summon 1 Normal Monster with the Same name as the target from your Hand or Deck.
ATK/1900 DEF/2600

Opal Born Dragon - WIND
*******
Dragon/Effect
This card is also "Luster Dragon #5" While on the field or Graveyard. This card can be special summoned by Banishing 4 "Luster Dragon" Monsters from your Graveyard. When this card is Normal Summoned or Special Summoned by it's own effect: Destroy up to 2 cards on the field. When this card Leaves the Field by an opponent's card effect: Special Summon 1 "Luster Dragon" Monster from your Deck.
ATK/2750 DEF/1950

I need to improve Emerald's effect, but eh.
OCG fixes are always appreciated.