I just gave up on a Clan game because my world spell netted me about 300 barbarian units, a good chunk of which were leashed (and therefore useless), and the rest hanging out in my territory in big stacks in every square after they reverted back to barbarian. Deleting them didn't work because they would just re-spawn in my territory as barbarians. Then my game started crashing.
RifE spawns entirely too many barbarians.