Board Thread:Episode Discussions/@comment-25558176-20150709114213/@comment-4912646-20150710035740

As already mentioned, Kakashi produced a bunch of shadow clones in the Land of Waves arc, and that was after he tired himself out fighting Zabuza. It seems that as long as the clones don't actually do anything, there isn't much risk to making them. After all, we know at least some of the chakra given to the clones is sent back to the user when they dispel.