Soulkeep - Why I have chosen Shattered Mirror?

In soulkeep every card matters as it has a special ability that other cards do not have although it may have a disadvantage that you need to encounter it using other spell or other tower and in this tower I have found a good feature that I do not found in other towers or rarely I found it.

This ability is pure damage as this Shattered Mirror can give a pure damage to targets and also hits flying targets as you can see it has a magic damage of 185 and it can be used 3 times with a singular type of attack and fire interval of 1.4.

This can greatly help with first waves as fiends has low HP and has a flying fiends in the waves so with fire interval which is not slow it will be good with these fiends and can help me pass these waves until I got enough mana there I will be use more powerful towers that I have like Amped Zapper and Twisted as you can see below.

The other towers that you can see below is Amped Zapper which is so powerful and will continue the job that Shattered Mirror started while eliminated high HP Fiends and also I have twisted tempest which with high range can help me with more than two ways that fiends came from.

I also have to use a tower with low mana and my choice is with king Trosser which can be used with only 55 mana and this is good also for bloodlings that came in high waves and need a fast towers not just one tower so I can use two of king trossers with a stew of doom to able to get rid of them and also Crackles will help eliminate some other fiends so what do you think of this formation.