Need help with a few triggers

Need help with a few triggers

well yeh, i am currently making Naruto RPG, and i havent been on wc3 WE for a while.

Is there any way i can make an illusion of a unit with exparation timer and the damage taken and damage given % thru a trigger?

will post other questions later, just need this one answered atm .

make it through a spell, that maybe Unit Equal to "Footman" use spell "Mirror Image" on "Triggering unit"