Snag

A snag is a type of terrain that appears in various Fire Emblem games. Snags resemble a collection of logs and sticks and are often found on the side river banks.

Uses
Althouguh the snag does not grant any defense or avoid advantages to a unit, a snag can be attacked to make it fall into a river. This will then provide the player with an alternative attack route, easily allowing a unit to cross the otherwise untraversable river.

Statistics
Most common snags have 20 hit-points throughout the series. No unit is allowed to attack twice against a snag, much like the mechanics of broken walls as seen throughout the series. The snag's low hit-points, unlike the wall, allows it to be easily felled in a single attack.