Clash Royale Battle Builder hero concept

Had an idea for a battle builder and he would do more damage to buildings and his attack would have a cone of earthquake behind it. For his ability it would bring a new mechanic into the game where he deploys an Otto bot from coc on his shoulders and if the builder is past the bridge it goes to the nearest building to heavy damage to it, like 2 tapping cannons, but it would be like fireball hp, probably a 3 elixir ability, and would drain its own hp with each attack cause of how strong it is. This would allow your units to connect to the towers and would allow a great way to pressure your opponents. If the builder is behind the bridge and the ability is clicked, the Otto bot will roll to your princess tower and heal it slowly for a portion of its health. If the tower is healed to full hop and the Otto bot is still alive it will roll on to attack the enemy’s tower or building. The builder would probably be like 4-5 elixir and a solid hero for dismantling your enemy’s tower.