it is worth around $20. more or less i don't know.
Light and Darkness dragon is better pretty much no matter what. Unless you're running Crystal Beasts.
You can't. It says in its text "This card can not be special summoned."
a good strategy for light and darkness dragon is to include counter traps, because its effect cannot negate them. you could also try a beat down strategy where you negate your opponents card effects with light and darkness and attack for win.
No. only one card can stop traps. Reaper of Cards.
Yes it will. The conditions are still being met, even if it was an Equip card at time of destruction.
There is one type of Rainbow Dark Dragon that was released in Phantom Darkness as a Secret Rare (PTDN-EN003). It is worth approximately 18-20 dollars.
Red-Eyes Darkness Dragon's password is: 9-6-5-6-1-0-1-1(FYI, you can find any card's password by looking at the bottom left corner of the card.)
There is no such card as Sea Dragon of Darkness. It sounds like a fake version of Sea Serpent Warrior of Darkness, whose Japanese name literally translates to Sea Dragon Soldier of Darkness. It has 1800 ATK, anything claiming to have 18,000 is also clearly fake.
No, no card's effect can be activated while it is in deck.
It is a fake card, a counterfeit version of 'Harpie's Pet Dragon'. It is not worth anything.
nothing. If you want to special summon a dragon, there's Red eyes darkness metal dragon
A card's text can't anticipate its forbidden or restricted status. For a start it was not restricted when it was released, and may become unrestricted in the future.