Drought

http://www.sacred-texts.com/hin/m12/m12a140.htm
http://indiafacts.org/honoring-gurus-learning-life-accounts-rishis-iii/

Amba / Story of Garland / Reborn / Gender Change / Chariot

http://en.wikipedia.org/wiki/Amba_(Mahabharata)
https://en.wikipedia.org/wiki/Amba_River

She did severe penance to exact her revenge on Bhishma. Following this, Lord Subramanya The God Of War appeared

http://knowledgefruit.blogspot.com/

1. Gave a garland of forever fresh lotuses and 
2. tells her that the person who wears the garland would kill Bhishma. 

Amba goes around many kingdoms asking people to wear the same. Utterly scared of Bhishma, no one dares to accept the garland. Amba finally places the garland on the gates of Drupada’s palace and ends her life. Drupada keeps the garland with him.

1. During the early years of Shikhandi, the garland is worn by him once. 
2. Now, the same garland is given to Draupadi during the Swayamvara. Which means the person whom Draupadi garlands in the Swayamvara will kill Bhishma- Which is Arjuna .
3.  At the end shikandi and arjuna combinedly injure Bhishma

Reborn as
http://www.india-intro.com/religion/mahabharat/65-mahabharat-amba-bheeshma-bhishma-anger-revenge-shikhandi.html
Shikandi
http://en.wikipedia.org/wiki/Shikhandi

Gender Transformation
http://www.indianetzone.com/46/shikhandi.htm

Chariot
http://devdutt.com/articles/mahabharata/on-krishnas-chariot-stands-shikhandi.html
Tube
https://www.youtube.com/results?search_query=Shikhandi+Bheeshma

Reference
http://www.sacred-texts.com/hin/m01/m01103.htm

stackexchange

https://hinduism.stackexchange.com/questions/tagged/bhishma