In addition, three times per day, you
can imbue any melee weapon held in your
hand with the frost property (DMG 224)
for 5 rounds.
When you activate the tunic, it generates
a fire shield, as the spell (warm shield
effect only), that lasts for 5 rounds. In
addition, any melee weapons you hold
while the fire shield is active are treated
as fl aming weapons (DMG 224). You can
deactivate this effect at any time with
another swift action. This ability functions
once per day.
所以应该是只能近战武器