The first orb of the mystical lands will not be visible. You should able to see it once you reach here.

The second orb can be found at Shiva's shrine
It will be hidden behind the waterfall
Walk a lil bit further until you see it

You will receive the 3rd orb from Shiva's blessing and with an ICY OverPower ability

The fourth orb once again will not visible
As you walkthrough you will able to see a hidden cave make your way there to claim it

Another orb you should able to see while climbing your way

Once you have reached here go abit right
At the edge you will find the last orb of The Mystical lands