I wanna craft the Dark Magic Wand but it requires the Magic Wand to do so.
Did you ever get the answer to your question? If not, here it is:
Magic Wand is a post-Moon-Lord magic weapon.
In order to obtain it you need to bring all the materials written in Research Note #2 along with the Note itself to the Explorer. A special dialogue option will appear.
So you need to bring :
Research Note #2
Shoots a powerful lime laser beam.
Can be upgraded into Dark Magic Wand.
What do you think?