yep, I messed up.
The concept was, increase the number of Ardboyz because in turn 2 they will be 2+/2+ (HR/WR).
If I were you I would change the Artefact on the Maw Krusha because "Destroyer" can be used just once in a game. Against Sylvaneth "Metalrippa's Klaw" is better with -3 rend. (Sylvaneth have a good save roll, especially in cover). Stay away from Spirit of Durthu with the MK and send to him the Ardboyz.
The mount trait as well is not so good, I think you would find more interesting for your MawKrusha Mean 'un. (+1 Damage with Tail and Fist)