The spell box,donate spells!

The spell box works exactly as the clan castle except you donate spells, to buy the box it costs 200,000 elixir.
lvl 1,1 spell TH6
lvl2,400,000 elixir,2 spells TH7
lvl3,800,000 elixir,3 spells TH 8
lvl4,1,600,000 elixir,4 spells TH 9
lvl5,3,200,000 elixir,5 spells TH 10
i hope you enjoyed my idea and that supercell will add it
BTW supercell will design it.

Spells are very importan imgin having 10 lighting spells (5 in spell box 5 in spell factory) You would take out both infernos and then more way to overpowered

Too overpowered, i think it should unlock at th 8 and hold 1 spell with no upgrades

Yeah, too overpowered. And it would completely unbalance the game.