Fire & Ice Arrows
The Fire & Ice Arrows is an upgrade to the Hero's Bow in The Wind Waker and The Wind Waker HD that allows Link to shoot Fire Arrows or Ice Arrows in addition to his normal arrows. Link obtains this ability by using the Ballad of Gales to warp to Mother and Child Isles. Once there, the Queen of Fairies gives Link the power of the Fire & Ice Arrows. The Fire Arrows can be used to melt the ice at Ice Ring Isle, allowing Link to enter the cave there. Likewise, the Ice Arrows can be used to freeze the fire at Fire Mountain, allowing Link to enter the cave there as well.