Loki

Loki examined the berries, the stems and the leaves. He thought about poisoning Balder with mistletoe berries, but that seemed too simple and straightforward.

[...]

"It is a little wooden dart I made.

[...]

"A little dart will do," said Loki. "The tip of it is sharp enough. Now, throw it there, Like I told you."

[...]

Hod threw the dart of mistletoe, just as he had been told.

[...]

Balder lay dead, pierced by the mistletoe dart.