A Few Spells Of Mine

I recently came up with a few spells... ironic since my cd drive crashed the other day and cant use wc3 editor yet but im wondering if a few of these are even possible because i cant try for atleast a while.

There both pretty identicle in a way...

one is where when your attacking a unit this is an insta cast that does melee damage times the number rolled. (This is where im not sure if can be done or a simpler way, the way i have it is when he casts the ability it rolls a random number depending on ability lvl and multiplies the attack times the number. so say lvl 1 of the spell u can roll from 2-5, lvl2 3-6 and so on.

The other is sorta the same except you can only attack at a % of there hp. EX: At lvl 1 ability you can only cast the abiity when there at 25% hp and it goes up by 5 each level. But it is a ranged spell.

Its possible with some basic triggering.

If I understand you properly this shouldn't be too challenging.