What does the cane of Somaria do?

What does the cane of Somaria do?

Cane of Somaria. Use: The Cane of Somaria is a magical item used to summon or unsommon a magical red block, which can be used for a variety of purposes. Only one block can be created at a time. The blocks can be picked up and thrown at enemies, or placed in the way of enemy attacks.

How do I get the cane of Byrna in A Link to the Past?

Go to Death Mountain in the Light World. Enter the warp that first brought you to the Dark World, then go south, jumping off of the cliff there. You'll land in front of a cave. If you have travel through this cave you will reach a chest containing the Cane.