New item! Dogs of War

Hello, Endercow here with another MC-War idea, Dogs of War!
This was inspired by the ancient Romans, who used hundreds of dogs in war. The Emperors would send out the vicious dogs, and the attackers would either block the dogs with thier sheild, or block the arrows from archers, leaving one option or another. The arrows would either hit them, or the dogs would cripple thier legs leaving them vurnuable.

Item: Dog spawn egg
Cost: $5
You get 2 per life
Goes under tactical weapons

Once spawned, the dogs will be by your side, or until an enemy on the other team is within 20 blocks of you, it will attack the player. If the dogs attack another player, they are given slowness 2 for 3 seconds, and dealing a massive 6 hearts.
The dogs will deal 4 hearts to iron armor, and 2 to diamond armor.
The dogs have life, but a decent amount. They will have a total of 8 hearts, slightly less than ours.

Fun things with the dogs:
To make it a bit more fun, the dogs will be able to get the collars in diffrent colours, but for $1000 credits each colour, and $100 to change to other colours. To name your dogs, it will cost $100.

The dogs will automatically upgrade once each of the dogs have gotten 5 kills each, both of the dogs forming one dog, but with 15 hearts and FREAKING LAZERS!!!!! Jks
But the dogs will be able to drop a grenade every 10 seconds wherever it is. Also, in super mode, the Canines will give you an option to let them go on rampage just abandoning you and killing and helping your team.

I believe if this feature and item added, CTF would be much more handy.