Board Thread:Suggestions Forum/@comment-25951286-20150226114229/@comment-25841881-20150406032618

Think about it this way:

One of the biggest wars the Haradrim have ever fought

The biggest battle/siege in that war

There were 20 Mumakil

They are obviously very rare and powerful, and should have some powers of destruction. It would only be with some 'weaker' blocks with lower explosion resistance.