This longbow sculpts its own arrows made of Ice when the string is pulled requiring no ammunition. If you use specials ammunition they are coated in a thin layer of ice and deal an addition 1d4 cold dmg.
A target Hit by an ice arrow has its speed reduced by 10. This has no effect on creatures with cold immunity.
Proficiency with a longbow allows you to add your proficiency bonus to the attack roll for any attack you make with it.