From Destinypedia, the Destiny wiki
Stasis Boomers are a class of Taken Boomers, commonly utilized by Taken Acolytes and Taken Knights. The weapon inflicts Stasis damage on targets, and leaves behind stasis fields on impact. These fields will slow down the player’s movement speed and eventually freeze them for a duration of two seconds if they do not get out in time.
Overload Taken Hobgoblins rarely can appear with this weapon as seen in Dares of Eternity and Astral Alignment.
List of appearances