The Mandiblor crown is a helmet with gold back swept antenna like protrusions. It is large enough to fit on the heads of most creatures.
The Mandiblor crown is a Danian Battle gear. When it's placed on the head of a creature, it makes them think that they are a Mandiblor no matter what tribe their from. It also gives them a burst of strength when the creature wearing it uses hive ability.
The only instance where a Mandiblor crown was seen was in season two, episode eight: Mega Match. Sarah was looking for the Mandiblor Crown and managed to find it, only to go into battle along with other Danians.