Need trigger enhanced spells - Paying points!

I need a trigger enhanced spell for the following move:
Blood Pact: Makes the target unit blood spill out of their body, dealing loads of damage and slowing them eventually unti they stop
Durations
20 secs for the first level, 25 seconds for the 2nd lvl and 30 seconds for the 3rd level. after that the spells ends
Damage
At level 1, 200 damage over 20 secs, 400 damage over 25 secs and 600 damage over 30 secs. cooldown time i wud like for all lvls is 15 secs

this should be in request forum...

but anyway.
I will see what I can do when I come home from my holyday..

you want it insta-cast or channeling, and if insta-cast, want it manual or autocasting?

auto cast plz