Deers legs

The Deer legs curse is a rather young curse, just invented and written down in the year of earthquakes. During this time a strong wizard devastated the land with strong earthquakes to kill other mages. One of these mages found a solution, he created a spell that allowed him to jump over large jagged rocks and cliffs. He first didn't know what to call this curse, until he saw a stag jump over a part of the Aledon river. He went to the Farley library to write down the curse. Almost all of the spell was written down until he saw another mage and went to kill him. In the ensuing battle he died, leaving the spell unfinished. Other wizards where too busy killing each other to ever finish the spell. A few years later in the most resent year Opal the mage received the unfinished spell book from somebody in the Liveon village. It took a few weeks for her to get around to fixing the spell. She fist had to find out what the mage got inspired by. She soon saw a deer and managed to finish the curse. She used it on herself to see if it worked and it did! But here is the question. How to get it off again? If she would leave the curse on her legs, they would loose muscles and perhaps never walk again. After a day she found rubbing a ruby on her ankles absorbs the magic. Opal decided to only use the curse when she needed to climb a mountain or jump over a cliff. She later introduced the Deers legs curse to her friends Mina, Charlie, Snowflake and Timber, in order to get ontop off a mountain, where the Moon temple is located. Snowflake and Timber didn't need the spell as they where wolves. Opal intends to write it down and teach it to the next generation of magic folk, in a school of mages after she is done with her trip around the world.