Thas'Dorah, Legacy of the Wind

+2 to attack and damage
5th: +2 to bonuses / 2d6 thunder dmg
11th: +3 to bonuses / 3d6 thunder dmg
17th: +4 to bonuses / 4d6 thunder dmg
Windburst: Piercing shot hitting every creature in a 10ft wide/ 120ft long line. Does weapon damage ^ + Int mod. Any ally caught in the area effect can make a Dex save equal to 1/2 your spell save for no damage.