This is a guide in Gruul Lair i've made with Avalanche.
Thought it's not one of our best kills with 10 people alive at the end ;)

Guild webpage: http://avalanche.team.pro

Songs used:

Skillet - Rebirthing
Evanecence - Imaginary

Edit: Avalanche is no longer on Shadowmoon, we migrated to Agamaggan due the russian problems on Shadowmoon. Avalanche is also now called official Avaianche (but with a capital i) since AvaLanche was already taken :(.