The path of Rust.

Goes as follows:

Blacksmith's Tale Grasp of Rust Leeching Walk

Sidepaths: Priest's Ritual Armorer's Ritual

Mark of Rust Ritual of Knowledge Rust Construction

Sidepaths: Lionhunter Rifle

Aggressive Spread

Sidepaths: Curse of Corrosion Mawed Crucible

Toxic Blade Entropic Plume

Sidepaths: Rusted Ritual Rust Charge

Rustbringer's Oath