I’ve might have the very first Gems of War event for you starting in October '14.
“Broken Battle” it was extended for 7 extra days after 1 week. Info posted on 3rd Nov please see the link below. Troop: Stone Giant, Weapon: Mace of Malice
https://web.archive.org/web/20141109045127/http://gemsofwar.com:80/