Merlin

Fostering Arthur
Merlin makes a deal with Uther that allows him to sleep with Igraine as long as he gets to keep the offspring that comes out of it. Uther agrees, and when Arthur is born Merlin sends him off to live with Sir Ector and his family.

Counseling Arthur
Merlin is very important to Arthur because he tells Arthur whether his choices will be good or bad. Sometimes, Arthur doesn't listen. For example he marries Guenever when Merlin says that it is a very bad idea. Merlin helps Arthur achieve Excalibur. He marries Guenever with Arthur although he knows it will not end well. He helps Arthur in several ways, giving him many warnings in different forms such as a young boy, and an old man to help Arthur.

Love and Death
Merlin falls in love with a girl, Nimue who was a lady of the lake. He always wanted to be with her which made her very annoyed, so one day she trapped him under a rock, ultimately leading to death.

Merlin's Many Warnings

 * Arthur will have a son with his sister who will be the downfall of Camelot.
 * Balin will strike the dolorous stroke, which will cause the downfall of a kingdom.
 * Arthur marrying Guenever will not end well, and they are not a good match.
 * Prophesizing that he himself will be buried in the Earth alive.
 * The scabbard will be stolen from a woman Arthur trusted.