subtypes

Mandatory traits:  Any Toxic subtype trait or subtype special weapon.

Special subtype traits: Corrosive Breath, Acidic Fluids, Radioactive Gem Cores, Nuclear Reactor Tail (Do not count into MYO traits limit)

Special Tail Weapons: Toxic gas gun. (This doesn't mean other types of weapons can't be used. Legendary subtypes can use any weapon from lower rarity and even make it special looking based on subtype.)