he has the power of the storm so he can control ice, water, wind and lightning. he can not directly control the weather but he can strengthen it or reduce it's power.
his blizzard shield spins really fast. and can blow away some projectiles.
the tip of his sword can shoot lightning.
backview with gear:
he also has trowing stars.
the tornado in his chest is the source of his power. he has a gear function. when you turn it the tornade spins with his sword arm.
for the people who are not a fan of the inika heads you can imagine kopaka nuva's head on him. it was the only other head that was big enough and also worked with the color scheme and figure