Rickety Bridge

Trigger Two or more Medium creatures or a Large or larger creature crosses the bridge

Effect The bridge collapses. The triggering creature(s) fall into the river below, taking no damage from the fall itself due to the deep water, but taking (2d8 + 5) bludgeoning damage (DC 21 reflex) from falling debris. For 1 round after the collapse, the waters below the bridge churn violently, requiring a DC 20 athletics check to Swim.