This is what I've got:

[b][color=ed1c24]Don't open if you don't want potential spoilers.[/color][/b]

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#1 Excalibur. Given to King Arthur by the Lady of the Lake.

#2 Yata no Kagami. One of the three Imperial Regalia of Japan. Used to lure Amaterasu out of her cave.

#3 A tooth of the Dragon Fafnir. Originally the son of King Hreidmar, who was changed into a Dragon by the curse of Andvari's ring.

#4 Clay from the Tower of Babel. God caused the Confusion of Tongues in response to the tower that was built out of clay. Atum, the Egyptian Creator God was supposedly self-born of clay.
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