These are Bloodline Traits and Jutsus/attacks that I may or may not have Yugi and Naruto use.
Bloodline Traits For Naruto
Ryusan (Mother's side)
Abilities
Users strength and speed increase tenfold
User grows dragon wings from back
Body is armored with scales
Grow tail
Claws grow from wrists
Dragonhead like helmet appears on head.
People with this Bloodline Trait can summon dragons (I am counting Duel monster Dragons as well for this summoning) without signing a contract. (The Blue Eyes Shinning Dragon is the Summon Boss)
Sharikugan (Father's side)
Abilities
Has the powers of the Sharingan and the Byakugan
When user save a person precious Sharikugan becomes Boenkyou Sharikugan
Jutsus For Naruto (maybe Yugi)
Hellfire Style (Only people with either a demon or a god sealed in them can use the Hellfire Jutsus)
Hellfire Style: Fox Fire Blast Jutsu
A large demonic fireball fired from the users hand.
Hellfire Style: Light of the Netherworld Jutsu
A powerful concentrated beam of chakra fired from the users hand.
Demon Summoning (Only a person with a demon sealed in them can use this kind of summoning)
Demon Summoning Jutsu
Summons the kind of demon that the summoner has sealed within them
Demon Summoning: Netherworld Burning Main Gate
Summon the main gate of hell
Demon Summoning: Netherworld Flame Walls
Summon walls of Hell flames around whatever you want to protect. Walls can only be lowered if the summoner dismisses it or the summoner is killed.
Dragon Style (Only a person with the Ryusan Bloodline Trait can use these Jutsus)
Dragon Style: White Lightning
A powerful draconic beam of chakra. Fired from the users hand.
Dragon Style: Inferno Fire Blast
A draconic fireball that can potentially destroy a mountain. Fired from users mouth.
Dragon Style: Neutron Blast
Two powerful draconic beams of chakra fired from the users hands. One blast from each hand.
Dragon Style: Shinning Nova
A massive blast of chakra released from the users body. Blast radius can be from 20 feet to 40 miles
Dragon Style: Darkness Nova
Similar to Shinning Nova except of darkness instead of light.
Dragon Style: Tomias Eye
A draconic beam of chakra shot from the users right eye
Dragon Style: Cridius Fang
A blast of draconic flames from the users mouth
Dragon Style: Harmos Claw
The user swings their hand while releasing chakra from their hand.
Dragon Style: Chaos Nova
A massive blast of chakra released from the user by combining the power of the Shinning Nova and the Darkness Nova.
Dragon Style: Summoning: Sword of Dragon Kings
Summon the sword used by the one who defeats dragons made from the largest fang of one of the Dragon Kings. Only one of the Ryusan Bloodline can use this blade. To them it is as light as a feather. Anyone else cannot even lift it. (Looks like Buster Blader's sword)
Dragon Style: Ultimate Dragon King Slash
Can only be used when one is holding the Sword of Dragon Kings. Naruto channels chakra into the blade then swings it while releasing the chakra from the blade. This technique has been known to level an entire forest in one slash.
Bloodline Traits for Yugi
Strength of the Gods: Obelisk the Tormentor
Grow Obelisk's wings
Muscles grow larger
Eyes glow crimson
Obelisk's horns and forehead jewel appear on head
Gain Obelisk's attacks
Strength increases
Strength of the Gods: Slifer the Sky Dragon
Grow Slifer's wings and tail
Slifer's spines sprout from back and forearms
Slifer's head becomes a helmet
Gain Slifer's attacks
Eyes glow yellow
Speed increases
Strength of the Gods: Winged Dragon of Ra
Grow Winged Dragon's wings and tail
Eyes glow blue
Winged Dragon's head becomes helmet
Gain Ra's abilities
Strength and speed increase
Winged Dragon Transformation: Phoenix Mode
Transform into the Winged Dragon's Phoenix Mode
Body is surrounded by chakra flames
Strength and Speed increase 100 fold
Can only be used for 30 minutes before Yugi faints from exhaustion
Shadow Powers
Eye of Horus appears on Yugi's head
Jutsus
God Summoning (Only Yugi can use the God Summoning Technique) (does not require blood)
God Summoning: Ra
Summon the Winged Dragon of Ra. Yugi must recite the ancient chant.
Ancient Chant:
Great beast of the sky please hear my cry.
Tranform thyself from orb of light and bring me victory in this fight.
Draw your power from deep within so that together we may win
Light the desert with your glow and cast your rage upon my foe.
Appear in this Shadow Game as I call you name,
WINGED DRAGON OF RA!
God Summoning: Slifer
Summon Slifer the Sky Dragon
God Summoning: Obelisk
Summon Obelisk the Tormentor
God Power (The Egyptian God Monsters' techniques)
God Power: Fist of Torment
Obelisk's attack
God Power: Fist of Fate
Obelisk's attack
God Power: Thunder Force Blast
Slifer's Attack
God Power: Almighty Blaze Cannon
Ra's attack
God Power: Almighty Blaze Nova
Ra's attack
God Power: Divine Phoenix Firestorm
Phoenix mode Ra's attack
Shadow Power (use a Shadow Power, including using monster attacks and card powers in the real world)
Shadow Attack: (put monster attack here)
Yugi uses a Duel monsters attack
Shadow Magic: (put name of magic card here)
Use the power of a Magic card.
Shadow Trap: (put name of Trap card here)
Use the power of a Trap Card.