A creature that touches the thoqqua or hits it with a melee attack while within 5 feet of it takes 3 (1d6) fire damage. In addition, at the start of each of its turns, the thoqqua deals 10 (3d6) fire damage to any creature grappling it. Any nonmagical weapon made of metal or wood that hits the thoqqua melts or burns. After dealing damage, the weapon takes a permanent and cumulative -1 penalty to damage rolls. If its penalty drops to -5, the weapon is destroyed. Nonmagical ammunition made of metal or wood that hits the thoqqua is destroyed after dealing damage.