Your primal magic forms invisible thorns that lurk just below the surface of the ground. When a foe steps on their location, they erupt to rend and tear flesh.

Encounter   ✦     Primal, Zone
Minor Action      Ranged 10

Target: One square

Effect: The target becomes a zone that lasts until the end of the encounter or until an enemy enters it. Without a Perception check (DC 10 + your level + your Wisdom modifier), your enemies notice neither the zone nor your use of this power. When an enemy enters the zone, the enemy takes 5 + your Wisdom modifier damage, and it is immobilized until the end of your next turn.

Published in Heroes of the Forgotten Kingdoms, page(s) 166.