How to assemble the snake-head axe
The axe is made of

Minifigure, Weapon Axe Head with Snake and Trans-Red Curved Blade Pattern
Bar 6L with Stop Ring
Bar 1L with Top Stud and 2 Side Studs (Connector)
Barb / Claw / Horn - Small

as seen on page 5 of the instructions from set # 70626