What stats did you use for Avalanche, btw?
I used Cait Sidhe's stats for Avalanche from the thread below. There are a lot of good stats for Marvel & DC supers.
http://leadadventureforum.com/index.php?topic=100873.0Avalanche
[Wildcard] Earthquake Generating Mutant
Move: 6"
Body: 6 Psyche: 6
Melee Attack: 4D Melee Defense: 4D
Ranged Attack: 5D [1] Ranged Defense: 4D
Psyche Attack: - Psyche Defense: 4D
Major Powers: -
Minor Powers: Barrier, Stun (Body), Power Blasts (minor), Armour
Backgrounds: Criminal, Military
Notes: 15" Power Blast Range