Spin off mission to win Fusion Card!

What will it be if we can fuse two soldier?
That will be cool if the game provide special mission at special time to win a fusion card.
Then we can fuse Wizard with Dragon, you have dragon rider, with more damage.
or a card that says +200 damage for a wizard, so if u include a wizard in the battle, u can use the card. but if u dont have wizard on the battle, u can still use the card in next war, but only once.

Or Goblin with balloon? so Goblin will fall down to the resource. Or witch with Balloon.