I believe that when you use the best tower that is available to you and you don't use it in the good position or you don't use it in the good time so it will not work well whatever its type even it is an epic fewer so you have to be a good attacker using the specific tower in the perfect time for defending gate and saving hearts.
So it is not about common or rare so it is about your strategy and your use of the tower and according to that I want to try a new strategy with towers that I have and these are common tower and not going to buy epic or rate and instead of them I will use a new tactics to get the same power of them with less cost.
First thing to do is to bring Cheapo as this strategy would need more mana and I need to save mana with Cheapo then I would use common cards that can be used with low mana also like card sharp and knife trosser and also gloom owl, I will upgrade these towers and have such a good defending and attacking ability.
When tower get a boost for its attacking and defending ability so this would be so amazing and I would have to upgrade them for damage and also for speed or even range in the last waves if this strategy worked well as when you upgrade a common tower with its stats so it become near a rare or sometimes with 3 upgrades, it might be like Epic one.
The more you think and read the battle and how it works and noticing the action of fiends so you could pass any wave that would face you and this in any battle and you could be a good soulkeeper.
