Stats:
Tech cost 10Cost 6
Hp 60
Attack 30
Range 2 (longer sword)
Armor 5
Pierce 5
Sight 4
Action 1
Spell resistance 50%
Effect: Superior group attack (attack bonus and range increased) - Trample
I also suggest to raise the spell resistance of the normal orc leader to 50%. Being a leader it should be more difficult to convert