This spell causes the plants of the Poison Forest to weave a barrier at the Mage’s command, it does not function anywhere else. This barrier is 20 + Level strides long and 4 high. Its depths are a cunning and deadly arrangement of thorns and poisons that will do 2D4+4 damage to any creature trying to cross it, doubled if they fail an Agility roll. The wall is permanent.
Blood+5 strides length or +2 damage per blood level.