ENT Gaming

The mana regen aura works fine for all units except:

dark priest
moon guard
minotaur/big foot
mermaid/highborne

They don't use their skill after reaching max mana
P.S buff moon guard pls

It's because skills also have cooldowns. The mana aura can still help though (not sure for each unit individually but I would assume it helps for all of them).

E.g. (numbers are probably not correct):
Mino gets 1 mana/sec, stomp costs 20 mana and has a cooldown of 18 seconds.

No mana aura:
The limiting factor is the mana regen and mino can only stomp every 20 seconds.

With mana aura:
Its regeneration now is 2 mana/sec. Now the limiting factor is the cooldown, but it can still stomp every 18 seconds instead of every 20 seconds.

Cooldown shouldn't be the deciding factor then, considering it's the underpowered units that don't benefit from the aura

in general the units cooldown is ~70% of the time to get the mana so the units indeed get a bonus out of it