Base Class: Rogue
Followers of the Samkurot, Samurai follow codes of stealth. The Samkurot isolate their home island called Moi-Jo Toji and their massive Japanese style home.
Death attack
Your sneak attack is doubled after 3rd level. So at 3rd level its 4d6 instead of 2d6, and at 16th level its 16d6 instead of 8d6.
Samurai Increase
Chose an elemental type of damage, your attacks gain 3d6 of that damage type. At 12th level you can gain an aditional damage type that you can switch between.
Sweep of the dragon
The powers of The Samkurot are unleashed within you. A Chinese style dragon bursts from the ground and eats you you are now that dragon. after seven hours in this form the dragon lands at the nearest land and fades into you.
In this form... Your hp is 150, your ac is 18, your flying speed is 140, your ground speed is 15. Your attacks are fire breath which does 5d12, dc dex save 16, sucseeded takes half damage. The other attack is tail whip which does 10d6.
Final breath
Your hp increases by 100, your base ac is now 14, any attack you make is increaced by 6d6+dex.
death attack could be +1d6 to your sneak attack, period
samurai increase is ironically weaker, i'd change it to letting you convert your damage into the chosen type at any amount
sweep of the dragon is just... why. samurais are japanese why are you getting chinese style dragons eating you and merging your souls? do you just get to use this after the 7th hour? needs more specifications. the hp is hilariously low, same with ground speed
final breath is honestly so good that you'd use sweep of the dragon to flee, not to use damage. also i'd just like to ask how the hell it's your final breath if you now have more health than a barbarian (ignoring con)
Level 3 option seems fine although a little over the top. Level 12 (should be level 9 or 13) seems fine as well though its not well explained why a samurai can randomly choose to deal extra damage of an elemental damage type. The dragon seems only useful for movement but lots of information for a monster stat block is missing e.g. size, tail whip attack roll bonus. Also tail whip should deal 0 damage (if you get the reference). Finally the final breath doesn't fit as a rogue subclass feature, nor does the benefits fit the name. Final breath sounds like a feature which activates upon health reaching zero and 2/3 of its benefit is basically just raising your defense randomly. Also you it's not explained what part of the attack is increased by 6d6 and what part of Dexterity is used to increase (Dex mod, Dex score). Overall its a nice idea but seems unfinished and requires some more refining.
Most of the features are missing the levels they are unlocked
Congratualtions level 14 makes Barbarian useless
This is so op but exactly what I’m looking for is op so this is very good.