Skills:
Chakra wall
Petrifying Jutsu
Primary Lotus
Enhancement of Earth
Boulder Justsu

Summon is Fukurokumaru or Ninja Cat.

Wait a round without doing anything, then on the second round, cast Mu's special on whatever ninja you think will cast its mystery, select one of your clones quick, cast chakra (giving yourself an additional 40 chakra), and cast Onoki's mystery, all back to back.
During the third round, Kiba's mystery on whoever is casting mystery.
Fourth round, you get Mu's and Onoki's mysteries again.

Mu's Chase can interrupt mysteries.

No healer is the downside of this, but you have shields.
I don't think they overlap, really, they both procure a very helpful clone. Another problem, however, is that when that clone is dead, you don't get it back (unless Mu dies AND resurrects), and it reduces your damage output significantly.