What different towers do"shadow"

So shadow is another must have tower for buffing

Shadow towers can go 2 ways power or weaken
Power=buff ... Aka the purple rings
Weaken=stun or defense lowering

Shadow power towers need to be built mixed with maze to keep zombies powerful
Power towers 2 types:
Faith= increased damage aka the pink rings
Will= increased chance of stun

Shadow weaken towers need to be placed in choak points to either slow mobs or destroy there defenses
Weaken tower types:
Lost mist= increase stun or slow movement
Destroying=mobs defenses are lowered