My theme for this contest was 'Witch'.
Coming up with an idea became increasingly more
and more challenging without being able to create
a distinguishable witch hat.

So, I came up with a little loophole,
to find characters portrayed in the media
as being either of Wiccan descent or a
sorceress.

Thus, Yennefer was decided upon.
As she was distinguishable as a character
and fit the Wiccan criteria (roughly).