By this time Kai had finished both sword and scabbard, and, stepping up to the giant's great chair, pretended to hand them to him. But, as the giant was off his guard, he lifted the sword, and brought it down on Garnard's neck, so that he cut off his head. Before his followers could lay hands on Kai and Bedivere, the knights rushed out upon them, and slew them all. Then, having loaded themselves with gold and jewels, but above all with the precious sword, they set forth again for Arthur's palace. This time they reached it in safety, and, having told their story, asked the advice of the King as to which of the six remaining quests they should first undertake. To seek out Mabon, the son of Modron, was Arthur's decision; and for this undertaking he chose Uriel because he could understand the speech of both animals and birds, as well as that of all strange men; and Idwel, because he was Mabon's kinsman, with Kai and Bedivere, because they were known never to turn back from any adventure until it was accomplished. So these four set out upon their quest. Now, Mabon had been lost so long ago that not the oldest man on the earth, nor their great-grandfathers before them, had ever heard anything at all about him. But Idwel remembered that many birds and beasts live much longer than the oldest man, so they determined to seek out the oldest of these. "And who," said they, "could be older than the Ousel of Deepdell? Let us seek her help." So they made their way through a great forest till they came to a shadowy place, where on a small stone sat the Ousel of Deepdell; and her they implored to tell them if she knew anything of Mabon, son of Modron, who was taken from between his mother and the wall when he was only three days old. "When I first came here," answered the Ousel gravely, "I was but a fledgling. On this spot where I now sit stood a smith's stone anvil. Since then no hand has touched it, but every evening I have pecked at it with my beak as I smoothed my feathers before sleeping. Now all that remains of it is this little pebble upon which I sit. Yet through all the years that have passed while this change took place I have never heard of Mabon, the son of Modron. But do not despair: I will take you to a race of creatures who were made before me, and them ye shall inquire of again." Then she took them to a place where, at the foot of an ancient oak, lay the Stag of the Fern Brake. Of him they once more asked the question: "Dost thou know anything of Mabon, son of Modron, parted from his mother when three days old?"