New Troop, Shrapnel

Are you tired of Wallbreakers dying so quickly? Or maybe you just want a bigger boom? Well, hire the Shrapnel, and soon, the enemy's base will be some ashes and debree!

The Shrapnel absorbs enemy attacks for a limited time, and after 5 seconds, watch it go BOOM and blow the base sky-high.

The Shrapnel would have 4 different levels and 1 passive ability.

Health:7.000e60(Is the same through all level)
Explode Damage:800/900/1050/1300(7.000e60 to itself)
Move Speed:18
Attack Speed:5 seconds
Army Camp Space:25(you can only bring up to 2 into a battle)
Training Cost:1600/2000/2500/3000 DE
Training Time:1.5 hours
Level 9 Dark Barracks needed(my other creations, the Destructor and Giant Enemy Warlord take up the other spaces)
Upgrade Cost:100000/150000/200000 DE
Upgrade Time:10/14/14 Days
Favorite Target: Defenses

Passive #1:Nuclear Combustion- The Shrapnel's explosion damage is increased by 1 for every 10 damage it takes before detonating.

TRIVIA
The Shrapnel can easily blow up dangerous defenses
*The Shrapnel is an air troop*
The Shrapnel will blow up anything in its range, including clan castle troops.
Even though it has the highest health in the game, it is not a tank.
It is somewhat based off the pet you can earn in Insaniquarium! Deluxe, named Shrapnel

What do you think? Tell me if it needs any changes! Anything is appreciated!

Also check out my other troops that I created!