Everything you deploy will be returned to you after the battle, so don’t hold back! When you accept a Friendly Challenge, you will attack your clanmates village using your current army. Any troops you have in your Clan Castle at the time you post will be used as defensive troops, but you won’t lose those either. Don't worry, they won't be able to steal any of your resources or Trophies. Once posted, any member of your Clan can accept the Friendly Challenge and launch an attack against your chosen layout.
Add some custom text (or don’t) and post the Friendly Challenge to the Clan chat. You can choose between your active layout or any other valid saved layout, including War Bases. To invite your clanmates to attack your village, look for the new 'Challenge' button at the top of Clan chat. You also won’t earn resources, Trophies or other bonuses. Friendly Challenges let clanmates attack one another for practice, competition, or just plain fun! Friendly Challenges are unlimited and won’t cost gold or consume Troops, Spells, Heroes or Traps.