[@Tracyarmav]

Basically how i would like to see it as a carbon copy of yourself and abilities that you possess. It is presumably a semi-sentient creature, that sustains itself off mana. If it reaches 0 it is simply stops existing due to it not being to sustain itself with 0 loyalty/mana. 

Or a secondary explanation would be that loyalty, will be our willpower use to maintain a carbon copy of ourselves again. If loyalty hits 0 which means our mental strength cannot hold this replica anymore and dispels.