Items/spells That Auto Attack

i kinda wanna know how to make a item/spell that auto attacks the enermy WITHOUT messing with the normal attack (if the spells activated my normal attack can also keep firing)

phoenix fire or barrage is propably what you search for.
If you want to make it active you have to trigger it.

barrage is passive and is only when you attack, but phoenix fire is that urm always active and it jsut attacks without interupting with normal attack?

phoenix fire will always attack when a unit is within range and won't disturb your normal attack.

ok thank you, this helps me alot