What was the Horn of Plenty also called?

The HOP is from a Greek myth.

In Greek mythology, Amalthea was a goat who raised Zeus on her breast milk, in a cave, on mount Idi of Crete. Her horn was accidentally broken off by Zeus while playing together. The god Zeus, in remorse, gave her back her horn with supernatural powers, which would give whoever possessed it whatever they wished for. The original depictions showed that her horn was filled with fruits and flowers.