This is my Ninja Set, which all of you will probaly see real soon xP
Currently those are the only "Ninja" Cards, and probaly will be.

I also tried to remake my void set but it seems that i have lost my account details

I'll only post the links though


Monsters
Akan, The Archer Ninja
Ghengis and Attila, The Ninja Duo
Hawkeye, The Ninja Pirate
Inferno, The Blaze Ninja
Juno, The Midnight Ninja
Komane, The Cursed Ninja
Kwondo, The Spirit Ninja
Pinqin, The Penguin Ninja
Rainin, The Rising Ninja Hi Ryan (I've done that in every acad were both in xD)
Volt, The Robot Ninja
Shredder, The Master Ninja

Synchro Monsters
Chanin, The Chain Ninja
Hideo, The Hidden Ninja

Spells
Chakra Concetration
Ninja Aura
Return of the Ninja
Seal of the Ninja
Shuriken Strike!
Smokescreen Illusion

Traps
Ninja Ambush
Ninja Swarm
Stealth Combat

Akan - Ban (With Necro Guardna limited, i doubt it would be any different)
Ghengis and Attila - You would have to reveal these cards, would you not? Besides, this card is OP. I would run it in an Exodia deck.
Hawkeye - Good
Inferno - OP
Juno - OP
Komane - OP
Kwondo - WAY OP, would be banned
Pinqin - OP (Draw 2? Seriously?)
Rain - OK
Volt - What? Discard 1 card to skip your DP? Then check a card that's drawn?
Shredder - Good

Chanin - Slightly OP
Hideo - OP

Chakra - OP
Aura - OP
Return - OP
Seal - OP... and it will just about always land on Even
Shuriken Strike - Too Costly. Discard 1 card while you control a ninja, maybe.
Smokescreen - Good

Ambush - Make Counter, too abusable
Swarm - OP.... don't put from hand on it, could OTK
Combat - First effect OP, Second effect is Underpowered

LOL, well i cant edit these snce i lost my account details =\