Missile System

[Sabrio]

I have checked the Spells, there is indeed many spells, but none of them fit what I'd really like.
I need someone to make me a Missile System for my map "Shaman Arena" .I can't post beta until I have the missile system, so I'd like a Missile System containing these features :

• The projectile can collide on both allies and enemies
• The projecticle collide in Air Pathing Blocker
• The project cast spell at every unit in "X" range when colliding (negative spells affect allies and positive affect enemies, too)
• No missile if casted in self
• User-friendly
• Possibility to change speed
• Have a timed life for projectiles if they don't collide on something

Of course, credits are included