Acid Trench

You glance at the the ground and notice it's a soft material, you drop and draw a 6 foot line and weave some hand symbols. You've created a deadly trap for any unsuspecting passerby, be it friend or foe

When the line is crossed or stepped on, a 3 foot trench will appear in the ground and be filled with an acid that deal 1d3 damage every turn that the creature remains in the trench. It's movement speed is decreased by half.