Clash of Clans one gem collector boost is back
It's that special time again, when boosting your collectors -- whether it be gold, elixir, or dark elixir -- is just a mere gem. That's right, for a limited time you can boost any of your collectors for 24 hours for just one gem each. And with the increased gem reward for removing obstacles, you should be well off.
The gem boost promotion comes alongside SuperCell's announcement of Clan Wars, coming "soon."