Command Crystal

Command Crystals are reforged and enchanted Blood Crystals that can be used to make or improve constructs (such as the Forged). There are four kinds of Command Crystals:

POWER crystals send small cantrips around the inside of the construct to push its body parts around. These are located away from the central unit (the brain) and are meant to control the body itself. There is usually one in the center of the body, and based on the available funds, it is recommended to put one inside each joint to enable precise movement. Generally the more POWER crystals a construct has, the more nimble they are (or strong if the crystals are stacked next to each other for stronger pushes within the system).
ACT crystals are the right half of a constructs brain. They contain the commands we have programmed them to be able to do. Without ASSERT crystals, having more than one ACT crystal confuses the construct and provides unreliable function, due to the accessed ACT crystal being seemingly random (or being switched around occasionally), giving them a condition similar to a multiple personality disorder. These are one of the only two type of crystals that need to be programmed. A construct no longer functions once they have zero of these.
ASSERT crystals are the left half of a constructs brain, they allow adaptability and learning. They do not have to be programmed, they are merely a container for the ACT crystals of a construct. A construct with this type of crystal present is categorized as an automaton and is able to contextualize and slightly modify the contents of its ACT crystals based on new information. Once one (or more) ASSERT crystal is present, the construct can be upgraded with additional functions by inserting more ACT crystals into it's central unit (brain). More ASSERT crystals allow deeper contextualization, interpretation, and thus more free will.
CONTROL crystals are the topmost functions of a construct. They immediately develop links to all accessed crystals. The most common types of CONTROL functions are connected to a remote controller such as an amulet, the holder of which is able to command the construct, even overwriting or straight up shutting down its brain. Since these crystals are designed to be highly invasive, removing them instantly shuts down the construct for good (as per design). They are one of the two types of crystals that have to be programmed.