How would you use brick out side of fractal or mitosis?
One by itself is cheaper than Armagio, but 2 walls unupped costs the same as 1 Armagio, which gives 5 more hp than the walls. 2 upgraded walls is equal to 1 upgraded Armagio. So it's not really a better alternative. Also why not use diamond shield?
My conclusion - at this cost of 3
, I don't see really any reason to use this. Well, since the gravity pull is automated unlike armagio's requiring an activation one turn later, I might consider splashing it in a rainbow. But that's it I think.
Edit - it could have good synergy with bone wall, being cheap and quick to die.