Dragon Master Hero

This is my new hero idea:
Like the other heroes his max level is 40 but he differs from the other 2 because he gets powered up before the battle!!
This hero uses his two blades to decimate building and troops alike. This hero is able to stack up to 10 dragons. Before battle you can sacrifice up to 5 dragons before the battle and during the battle he absorbs the dead dragons giving him extra stats for a maximum of 10.
1-4 stacks gives him stat boost that will help him in battle
5th stack gives him the ability to fly into battle with a dragon that will help him go over walls and when the dragon dies he fights on foot.
Stacks 6-9 gives him more stats that will help him fight.
Stack 10 gives him a little more health, stats and grants him the ability to use his wings so that walls can no longer hinder him.
Now like the other heroes he will have a hero ability at level 5 which will allow him to summon a dragon that is equal to your dragon troop level.
-level 10 allows him to summon one dragon with wards that will protect the dragon.
-level 15 allows him to summon two dragons.
-level 20 allows him to summon two dragon with wards that will protect the dragon.
-level 25 allows him to summon three dragons.
-level 30 allows him to summon three dragon with wards that will protect the dragon.
-level 35 allows him to summon four dragons.
-level 40 allows him to summon four dragon with wards that will protect the dragon

-Thank you for reading and what do you guys think?

On the up side, I thank you for taking the time to provide a detailed breakdown of your initial vision. You even took the time to hand draw reference art. Not many here do that and I will buy the first person lunch at my favorite Irish restaurant who can find me a new hero thread that is a person's first post ever with this sort of detail. You have given us all hope for fresh spawn in the future.

The down side, it sounds very over powered the way you have it described. It would need some major adjustments to be introduced. You will likely receive a fair amount of negative responses. Please remember to take them graciously and be willing to modify your original idea to accommodate for both the positive and negative feedback. I guarantee it can't be the way you have it described now but that doesn't mean you can't update it to work.

Thank you for the feedback I will try and see what stats he can have in the near future