Affecting one unit with AoE buffs

Hi I need a smooth advice on how to make for example drunken brawler only affect the target unit.
I tried to set area of effect to 1 but units very close to it still get affected.
Prefer no triggering involved. thanks.

You want the miss effect, or the ability to lit fire with firebreath?

If you want the miss effect what about using an ability based on curse?


As if you want the ability to lit fire on the target unit, try setting area of effect to 0 maybe that works.

Drunken Haze -> AE Spell
Drunken Brawler -> Passive Evasion & Crit

Yes 0 as area of effect works