Giving vision of unit after it uses ability

[Lohengrin]

Is there a way to give an enemy vision of a unit, for say, 20 seconds, when it attacks one of his structures (the enemy's) with its ability?

In other words, unit A uses ability on enemy B, at which point enemy B gains vision of unit A for 20 seconds.

Thanks,

[defskull]

So the event that triggers all of this, is from "Attack" or from a "Spell" ?

when it attacks

unit A uses ability on enemy B

[Lohengrin]

when it attacks one of his structures (the enemy's) with its ability?


Spell,

:p

[defskull]

Does the spell is meant to only target structures ?

[Lohengrin]

Yes.

[JYou]

Part of the Night Elf's Faerie Fire ability allows the user-player to be able to see the afflicted enemy unit.

Just knock the armor reduction down to 0 and set the duration to 20 and make a new buff for the targeted unit. But you need it for buildings so I don't know how much it helps.