Increase Sacred Orb drop rates

For the challenge "Craft Items IV" in the current league (Scourge 3.16), we are required to use a Sacred Orb.
According to Chris Wilson during streams, it was mentioned that this orb will be of rarity between Exalt and Mirror.
That's quite rare!
For some1 going 40/40, this will be more than half a Headhunter cost for 1 challenge...
Please reconsider rarity of Sacred Orb.