you can get them when you purchase legendary colection 2 duel academy

Yes, it's called Armityle the Chaos Phantom.

None But Some Contain The Sacred Beast Cards :)

Yes, the Sacred Beast cards, "Uria, Lord of Searing Flames", "Hamon, Lord of Striking Thunder", and "Raviel, Lord of Phantasms", are allowed to be used in tournaments. The Egyptian God cards, on the other hand, cannot be used. Look at the official Advance Format list to see what other cards are banned or limited in tournaments.

depends on the sacred beast one is 3 continues face up spell cards another is 3 continues face up trap cards and the last one is 3 fiend type monsters and you need to sacrifice 3 monsters because there so powerful