Duskoar

The Duskoar is another of Lavertus’ amazing homemade weapons for survival in the deadly Outlands. The talented tinkerer has used his genius to infuse this weapon with pure CHI, creating a blade lined with tiny moving blades of its own! Activating with a lion-like roar, it’s just the thing to help him blaze a trail through overgrown and hungry plants.

Trivia

 * The Duskoar is basically a chainsaw according to it's LEGO.com Bio.
 * Despite being made to cut down trees, it was shown in one of the webisodes that Lavertus actually uses the Black Valious for the same job.