Frostboil Bow

Elemental Arrow: At the start of your turn, you may expend your BA to change the base damage of this weapon from piercing to fire, cold, lightning, or thunder until the end of your turn.

Elemental Shot: Your bow has 3 charges which it regains daily at dawn. You may choose one of the following special maneuvers: Being within 5 feet dose not impose DA.

Lightning shot is a 50 foot long 5 foot wide piercing line.
Ice shot is a 10 foot wide 40 foot tall cylinder within 60 feet.
Fire shot is a 20 foot