hows this for a git combo?
deploy a little spider shaman in 12'' of arachnarok shaman for +1 to cast, and cast cogs in front of the arachnarok to give him an extra spell (and reroll saves).
arachnarok shaman hand of gorks himself (+1 to cast) forward 8 inches or so in front of cogs, where his chaff grots can run in front of him in move phase to protect him. arachnarok shaman then casts the moon endless spell within deadly range of enemy army, 12'' through them and zapping about 5 units for D3 MWs and putting -2 cast debuff on a wizard or 2. then with his 3rd spell he casts mighty mushroom and lobs it easily into the enemy deployment zone, slaughtering any horde units in the 16'' bubble.
best thing is you can choose to go SECOND in the second battle round (hard choice for enemy), and the shroom immediately blasts them again regardless before they do anything. then they can try and unbind it but are minus 3 to cast (moonshine hits them in round 2). then on your turn you can unbind it and re-cast it and blast them again.