They are Timaeus, Critias, and Hermos.
First off it`s called yugioh not yigioh second they`re not real they`re just in the show
Yes, they are in the pack 'Legendary History', they are very rare though.
not in production yet but its coming in the legendary collection three this October
No. The cards have different names and therefore count as different cards (therefore you can have three of each, but they don't count as each other).
1000% of attack
no
29,99$
the dragon pack
There are three movies: Waking the Dragons Pyramid of Light I think the newest one would be Bonds Beyond Time.
in the legendary collection
It will be released in the Dragons of Legend pack on April 25th along with Dark Magician Girl the Dragon Knight and Legendary Knight Timaeus. The other two dragons Hermos and Critias are not known if they are going to be in the same pack but based on what's being said about it, it might be safe to say that they also will be released in that pack.
Obelisk the Tormentor Slifer the Sky Dragon The Winged Dragon of Ra