mass cripple?

how would i make a mass cripple ability? Also how would I make a skill that summons like 8 chimeras in a circle around 1 unit and all shoot it at the same time, the chimeras all being invisable tho, that way its just like 8lighting bolts comming from a cirlce down to that unit. o ya 1more skil, is it possible to get fire gonig across the ground? like shockwave going across the ground back and 4th, i want a wake of fire type skill from diablo

any1? Also i want a mass entangle though if i find out mass cripple im sure its the same way

Your mass-spells would be trigger based. Create a shadowless modelless sight-radius-less invulnerable unit that has a version of the base spell (i.e. Cripple or Entangle). The spell should be modified so it has 99999 range, 0 cast time and cooldown, and 0 mana cost.

Modify a dummy spell and call it "Mass whatever". I've heard Roar is a good spell to modify. Make it have no effect whatsoever.

When your dummy is cast, create the modelless unit on the edge of your map and order it to cast Entangle or Cripple on each of the units within the spell effect.

To the observer, it will appear as if you have cast a mass spell, and they shall say "w00t".