Stones for last mechanist trait?

1

which ones and how much I need?

2

Click on the Trait to see it’s requirements

3

Minor Earth Traitstone: 34
Arcane Lava Traitstone: 6 (Grosh-Nak)
Celestial Traitstone: 2

5

TaliaParks.
It shows only description

6

Click on the traits on the troops page.

7

34 Minor Earth
6 Arcane Lava
2 Celestial