Command

Command, also known as the Artifact of Command, is one of the artifacts that can be found in the Hive Cluster level. In the top right area, there are several pink ropes that flicker; the character must jump from rope to rope to collect the artifact. The artifact causes random items to become free to open 'chests', which are outlined either white, green, or red. Which items are in the chest depend on what color the outline is, a white outline would give items such as the War-banner, Monster Tooth, and Rusty Knife for example.

Note that you can choose ANY item from the chest's rarity, regardless of whether or not you've unlocked it. you can't, however, get a rare item from a common chest.