Bad and good idea. People in real life can pay $2 for a ticket and win millions, but that doesn't matter because the government keeps earning money. That's not what it's like for Clash of Clans. Supercell needs money to do make stuff a lot of times so I don't get why they would add this.. It sounds cool to get gems from a lottery, but I don't think that's happening. If Supercell did this then nobody would buy gems and once they run out of money then they're out of luck.
BYE!

