Are you finding it difficult to capture someone's Leader, because the player must be in Battle Craze? Here are some tips for you! It all boils down to a keen sense of observation!
☆ Look out for players who are rallying for a battle. Apart from rallying for Intruder battles, all other kinds of rallies will put the initiator in Battle Craze. Have some patience and pay attention to their target. You can launch your attack once you confirm that they are not attacking an Intruder base.
☆ Check travel routes on the map. Tapping on the route of a traveling army will show you where they departed from and their destination. You can then deduce if they're launching an attack.
☆ You can even pretend to attack a City! Anyone who garrisons their troops in the City to defend against you will enter Battle Craze.
Of course, all of this is not that easy to put into practice. But doesn't that just add to the fun and challenge?