Hellfrost - Murder Hobos in the Snow:
Trappings: Rippling earth, buffeting winds, wall of snow.
Knockdown: allows wizards to bowl over multiple foes in a single spell. It is popular with pacifi sts. The caster makes an arcane skill roll. With success, he places the thin end of a Cone Template in front of him and angles it in whatever direction he wishes. Any character touched by the Template, friend or foe, must make a Strength roll opposed by the caster’s arcane skill roll. On a failure the character is knocked back 1d4” and becomes prone. If he rolls a 1, regardless of his Wild Die, he is Shaken, even if the Wild Die indicated he was not knocked back.
HF pg. 87