New Troop: The spider

Favorite Target: Defences
Damage per Second: 70 (75 against defences)
Training Cost: 100 Dark Elixer
Training Time: 5 Minutes
Targets: Ground and Air
Movement Speed: 45
Housing Space:15
Hit points:500
Description: Born within the depths of dark barracks the spider is a mighty troop with the ability to climb walls. As it speeds through targeting defences with its webs. Its burning red eyes will target anything even air reinforcements. Its speed and ability to climb walls makes it one of the harder troops to take down.

I don't know if this is a good idea or not leave me some ideas and feedback down below thanks guys!