Clash of Clans Clan Wars are almost here. Prepare your defenses!
Supercell has discounted the cost of boosting resources. For a limited time, boosting any resource collector — be it gold, elixir, or dark elixir — will now cost just one gem each. The boost lasts for 24 hours.
Supercell says discounted boosting will last until the Clan Wars update is live. With the increased gem reward for removing obstacles, you should be well off.