Nice idea of Lottery! :) (NOT ONLY GEMS PRIZE)
I hope you like the lottery I gonna offer:
Like a lottery (Which it`s not, its a luck game?), choose a box (locked box), choose one and it will be open
Than, from that box you might get:
1)some gems (5 maybe? you choose supercall)
2)Some gold
3)Some Elixer
and there should be 9 options (9 locked boxes) to choose, you can`t know what is inside the box until you open it, and you get this lottery every 24 hours
Chance of 1:9 to win the 5 gems, so the chances aren`t so high (for you supercall :) )
You can set the 9 boxes like that:
First, each th will have diffrent prizes (Gems prize may be stay 5)
Now, th7 prizes may be like that:
1) Bag of Gold (10k gold)
2) Sack of Gold (30k gold)
3) Box of Gold (100k gold)
4) Bag of Elixer (10k elixer)
5) Sack of Elixer (30k elixer)
6) Box of Elixer (100k elixer)
7) Bag of Dark Elixer (200 Dark Elixer)
8) Sack of Dark Elixer (500 Dark Elixer)
9) Gems (5 Gems or more, I think 5 is the minimum)
This is how it will look like, if you want to deacrase prizes you can, or raise, just showed my idea.
Each th will have to get a diffrent prizes, because there are townhalls which need more, and there are th whice need less (I mean, town hall 4 with so much gold? no way :D)
Also, town halls which are less than 7, can`t hold dark elixer so they wont be able to get Dark Elixer, so instant of "Bag of Dark Elixer" they will have Chest of Gold, and instant of Sack of Dark Elixer they will have Chest of Elixer (I say double than the Box prize)
Hope you liked it!!
Notice: Hard to get the gems in the lottery, so supercall if you can do more than 5 gems ;)
That`s maybe why you will like it, hard to get the gems
