some told me that Tyrant Dragon is on the ban list i'm not sure if it is true cause it is weaker then a blue eyes but it effect let's u attack 2 time in one battle so please tell me if he was joking or is the tyrant dragon really ban?

No, they were joking because tyrant dragon is not banned. It is not even restricted or semi restricted. Here is a list of cards that are banned, restricted, and semi restricted. You can find this information at yugioh-card.com

I. Forbidden Cards

NEW! You cannot use these cards in your Deck or Side Deck:




Chaos Emperor Dragon - Envoy of the End
Dark Hole
Delinquent Duo
Graceful Charity
Harpie's Feather Duster
Imperial Order
Mirror Force
Monster Reborn
Raigeki
Sangan
United We Stand
Witch of the Black Forest
Yata-Garasu




II. Limited Cards



You can ONLY use one of the following cards in the Deck & Side Deck combined:


Black Luster Soldier - Envoy of the Beginning
Breaker the Magical Warrior
Butterfly Dagger - Elma
Call of The Haunted
Card Destruction
Ceasefire
Change of Heart
Confiscation
Cyber Jar
Dark Magician of Chaos
Exiled Force
Exodia the Forbidden One
Fiber Jar
Heavy Storm
Injection Fairy Lily
Jinzo
Left Arm of the Forbidden One
Left Leg of the Forbidden One
Mage Power
Magic Cylinder
Magical Scientist
Mirage of Nightmare
Morphing Jar
Mystical Space Typhoon
Painful Choice
Pot of Greed
Premature Burial
Protector of the Sanctuary
Reckless Greed
Reflect Bounder
Right Arm of the Forbidden One
Right Leg of the Forbidden One
Ring of Destruction
Sinister Serpent
Snatch Steal
Swords of Revealing Light
The Forceful Sentry
Torrential Tribute
Tribe-Infecting Virus
Twin-Headed Behemoth
Upstart Goblin
Vampire Lord



NEW! Dark Magician of Chaos, Morphing Jar, Mystical Space Typhoon, Protector of the Sanctuary, and Torrential Tribute



III. Semi-Limited Cards



You can ONLY use two of the following cards in the Deck & Side Deck combined:



Creature Swap
Last Turn
Manticore of Darkness
Marauding Captain
Morphing Jar #2
Nobleman of Crossout
Reinforcement of the Army

why is monster reborn res. doesn't make sense and some of then other cards to i would understand if they limited monster reborn but why not let u use it

reborn is a powerful card. get almost any monster from either players graveyard with no cost and no bad effect.