Boss skill

[Rainbow Evil]

Hello!I ve been doing this map where bunch of heros must defeat hordes of monsters and bosses.Well,I have problem with boss skill.Lets call this skill Marked by Flames.Target is marked and after 6.66 sec,target takes 500 dmg and all units near it get same buff.How do u do it?Also how do u make text to show time till damage over units head?

 

[apocalypse_dude]

Use shadow strike to mark and damage target
then create a unit group with all units within x range and use dummy casters to cast another shadow strike on each one of them
u can use game text to create countdown above units heads

 

[Rainbow Evil]

k,ill try.