Venomfang

A young green dragon named Venomfang has recently claimed the tower, having passed over Thundertree while searching Neverwinter Wood for a suitable lair. The giant spider corpses are the former residents of the tower, killed by the dragon after it tore its way through the roof. Since then, Venomfang has been laying low. Venomfang does not want to give up such a promising lair, but if the characters reduce the dragon to half its hit points, it climbs to the top of the tower and flies off to fight another day.