You don't need to make it Auto-Castable. You just put it in your map and if it's an Auto-Cast spell, it will just come up with the glowing lines that circle the Icon as usual.
wtf it's not yours its also a kinda bad recolor, make it blue and then call it IceArrow. i dont know how it had a 5, maybe people were stoned or the buttons 1 2 3 4 were removed for few hours...wtf...