Dokuton

Name of the Kekkei Genkai: Dokuton (Poison Release)

Type of Kekkei Genkai: Ninjutsu

Rank: A

Description:
Dokuton allows the user to mix earth, poison, and water to create poison. What makes this kekkei genkai so deadly is that the user can improvise the poisons he or she wishes, creating things entirely new. Some examples are:
-A hallucinogen gas that causes visions of personal fear to induce panic.
-A corrosive liquid that can actually cause the body to disintegrate.
-A gas that fills the lungs with liquid, causing the breather to drown.

Weakness: Since the user's body is composed of many poisons, a single antidote dosage could prove fatal, perhaps killing the user with a single drop. Additionally, only one poison can be expelled from the body in a single form at a time. Extreme heat weakens the poisons, and they spread over water, killing an entire lake.

Well, first of, I think you meant wind, not poison hopefully.

Second, you can't mix in three elements to make an advanced one. What you would have to do is create a little more detail in the chemistry behind it and make it into a reasonable two element manipulation.