how do i make an aura for towers

[thegreatsmite]

and tower aura that boosts nearby tower damage and another one for speed. how do i make these?
and why won war drums work if i ass structure to the targets list?

 

[Smiddle]

Have you tried adding 'Mechanical' too?

 

[Slaydon]

i think you will need some triggers that will add Speed rate / Damage rate depending on the spell.. but i dont know how, sadly

 

[TheDivineBoss]

War Drums is the same as Command Aura, try that one instead.

Edit: And Endurance Aura for the attack speed.

 

[terradont]

It should be the targets i presume.
Try crossing structures and/or mechanical