Cloakers speak Undercommon.

Cloakers usually lie still, watching and listening for prey. If facing a single opponent, a cloaker uses its engulf attack. Against multiple foes, it lashes with its tail in concert with its moan and shadow shift abilities to reduce the opposition’s numbers, then engulfs a survivor. Multiple cloakers usually split up, leaving one or two behind to use [[SRD:Special Abilities|special abilities]] while the rest make [[SRD:Melee Attack|melee attacks]].