Can someone make a warrior cat prophecy?

[TwixmPix]

I'm making a fan fic. Can someone please come up with a good prophecy?
Name: Echosong
Clan: Lightningclan
Rank: Medicine Cat
Eyes: Emerald Green
Pelt: Silver with gray tabby stripes
Personality: Just like the Echosong from Firestar's Quest. Kind, careful, helpful, and caring.

Name: Sorrelstar
Clan: Blazeclan
Rank: Leader
Eyes: Gold/Orange
Pelt: Flame colored tortoiseshell
Personality: Acts like a goody-goody when she's with her mother or any other cats. She is very mean to her sister, Echosong. When she was deputy to the leader, Morningstar, Morningstar left on a quest. When Morningstar got back, Sorrelstar didn't want her to be leader. So she killed Morningstar.

I want the prophecy to talk about both cats but tell that Sorrelstar is evil without practically saying what's going to happen. The prophecy will be given to their mother.

 

[Mike]

as the cats gazed apon the holy sand box they new a dark day was coming. the two tribes that had waged war up till now, realised that an aligence would have to be made. for all cats to unite under one flag, to pay homage to the one tru god. the oscelot god felix teofilus.