Authors Notes: This is an Alternate Universe on what if The Viper survived his mind-blowing battle against The Mountain That Rides.
"YOU RAPED HER, YOU KILLED HER CHILDREN!" Oberyn screamed at the killer and rapist of his sister. He then walked off the body of the still alive mountain and smiled at his paramount. He then glared at the downed man and screamed once more, saying "WHO GAVE YOU THAT ORDER! WHO DID-" Narrowly seeing the hand of The Mountain. The Red Viper jumped out of the way dropping his spear.
The mountain stood up and limply ran towards the spear. Oberyn(now disarmed) thought about his next move. The spear had a slow acting poison which has no cure so the if he got scratched then he is a dead man, "And today is not the day I die." he though and 'recklessly' charged at the mountain.
Gregor Clegane PoV
This man should have killed me when he had the chance. Too bad he's unarmed now and can't hurt me anymore. I then swung the stick at him, to which he slid on the floor and shockingly held the spear's body and kicked me. The attack landed on the area he stabbed and I knelt in pain. He then said with a sneer "You will die, but not before you confess. If not then I will remove every body part slowly and painfully before you..." he then stabbed my right hand, the pain was horrific and he pulled out the spear and said "...Die!" then he stabbed the left hand with a grunt. As he hovered towards my legs I screamed in pain, it seeped through my body and the pain rippled through. In panic as he stabbed my left leg I shout out "I yield, I yield, I was ordered to killed the Princes' wife!" He then glared and shouted "BY WHO?" in pain I screamed "By Tywin, by Lord Tywin, he made sure to ordered me to make sure no one leaves the castle alive!"
Oberyn Martell PoV
At the news I swiftly glared at the widened eyes of Lord Tywin. Then with a sneer I stared at the man. This man had killed my nephew and niece, had raped my sister with their blood on his hand. However as a man of mercy I will give him a quick death and end his pain. May he suffer in hell. Then I pierced his head with my spear. My sister was avenged, the mastermind was exposed, Lord Tyrion is free. My job here is complete. I smiled to the dwarf and smirked at the enraged Cersei Lannister and shouted to the applauding crowd "Lord Tyrion is not guilty by God's judgment but The Mountain was!"...
I returned to Dorne the day afterwards. To my brother Doran, to my daughters, to my home. I then walked up to my sister's grave. Holding my tear's in, I knelt down and dusted the grave and whispered to myself "I did it dear sister, I avenged you." And I cried to myself...
AN: This is a one shot. I might continue one day but I suck at fight scenes so it might suck. Thank you for reading.