Dota, Faceless Void, "Backtrack"

[WereElf]

Anyone has any idea how to make an ability that has a chance to reduce damage taken to 0. Spell damage included. I made an ability with a chance to nulify physical damage, but I have no clue how to nulify magic (spell) damage.
I tried to save the unit's life 2 or 3 times per second and when it takes damage - it has a chance to be returned to the saved value of its life, but this way sometimes you can see its life going down and then almost instantly going back to where it was.
I want something, that can't be noticed.
I got the GDD detection on my map. Perhaps someone can tell me how to reduce the damage taken to 0?

 

[Acutesharpness]

make him invulnerable when the proc and damage is detected ( it detects before damage is taken), wait for 0.01 second ( you can use periodic event or timer for accuracy) then make him vulnerable, he will become invulnerable for literally a flash (back track literally) like it's just beautiful.

 

[Wietlol]

There should be a variable called "Amount" like "DamageEventAmount", set that to 0.

 

[KILLCIDE]

As far as I know, Weep's DDS merely lets you detect damage, not modify it. You will need to use something a bit more advanced like Bribe's or looking_for_help's system.

 

[Daffa]

I think the Hardened Skin can do the job, +Spell Book trick will make it unnoticeable.

 

[WereElf]

I think the Hardened Skin can do the job, +Spell Book trick will make it unnoticeable.

If you are talking about the mountain giant passive, it's only working for physical damage, not for spells.

 

[Acutesharpness]

However trigger damage unit action applies to Hardened Skin, which is why some dota skills used to block by Poor Man Shield but is also now fixed.