True Vikings always help their brothers-in-arms. When you join a Clan, you will be able to speed up some processes in your clanmates' Towns. To do that, you only need to hit a special button. Every time you help your fellow Clan members, you will earn 10 Prowess and Loyalty Points (they will be useful in the Clan Store) and will speed up the process by 1 minute or 1% (the higher value is selected automatically). You can receive a maximum 1,000 points in a day this way.