"From that conversation I can assume I am now named Jack Frost and dear old dad wants me to kill everyone. No way will I ever destroy mankind, but before I do anything I need to break out of this egg".
One week later...
"Finally I escaped (looks around). It seems I am in some kind of forest, so first things first I need food, water, shelter and some kind of weapon because my ice powers are currently too weak to use right now.
"At least one of those dragons must have had a cave nearby, so I will first find that after I see if the dragon corpses are edible."
Jack walks over to one of the corpses and rips a chunk of meat with his sharp teeth. "Tastes good, so now I have a source of food. Now for water and shelter."
Jack walks north of the dragons and sees a cave filled with gold, treasures and various weapons, with a river nearby.
"Perfect. Now I have everything I need to survive. Now for the food."
With great effort he manages to drag the two dragons to his new large cave to eat.
A month has passed and he continues to train his ice powers and his sword skills with a blade called Excalibur that he found in the cave.
The dragon meat seems to increase his power, giving him the combined power of the two dragons. As a result he is growing stronger very quickly.
Two more weeks pass by. As he is training, he is being watched by a powerful wizard named Merlin, who witnessed his bonding to Excalibur.
Merlin: "You are the one to save Camelot from Mordred's tyranny. I know it!"