Board Thread:Theories/@comment-30785465-20170223183145/@comment-31209938-20170223234738

Its most likely what GodKingReiss said, Its his unique power, We've even seen him summon Titans out of no where during the Return to Shig. arc. And the "more intelligence" I think is just that they're being controlled and given a task by the Beast Titan. So far every confirmed titan shifter we've seen has a unique power (if you count speed as a power for ymir), this is probably his.