Searing or frost arrows without orb effect

[M4gz]

Hi. I want to make an ability based on searing arrow or frost arrow but without orb effect. I need to spend mana by each attack and make it possible to autocast. Is there is the way to make these abilities without orb effect?

 

[Hermit]

Why don't you use Orb of Annihilation instead?

 

[M4gz]

Why don't you use Orb of Annihilation instead?

Thanks for answer. I tried using that ability but it still override other orb effects like Mask of Death. In the Object editor iv reset all values to 'none' or '0'.
Also i cant get another moment - how can i detect event "if unit was attacked by that skill" im using Bribe's Spell and Damage system but i didnt find the way to catch that kind of interaction with attacked unit. Can you give me a tip how to solve it please?

 

[Warseeker]

Also i cant get another moment - how can i detect event "if unit was attacked by that skill" im using Bribe's Spell and Damage system but i didnt find the way to catch that kind of interaction with attacked unit. Can you give me a tip how to solve it please?

Detect when casting frost, flamme or dark arrow