I'm trying to design a concept for a Trading Card Game and I've got this thing thought out, but I'm unsure how to name it.

The concept:

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> Creatures can be divided into several parts that can be independently destroyed when a creature enters combat.
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A few examples of these parts that make up a creature are the following:

* *Orc with Spear*, consists of *Orc* and *Spear*
* *Bear*, consists of *Head*, *Body* and *Legs*
* *Mechanized Bear*, consists of *Head*, *Body*, *Legs*, *Armor* and *Rocket Launcher*

As you can see sometimes every part referred is a whole entity, sometimes it's a body part and sometimes it is an attachment or a tool.

I've come up with the following names, but none of them quite cuts it:

* Part
* Piece
* Component
* Modification

Someone also suggested me to use *Fragment*, while it sounds really cool, I'm not quite sure how I can justify that it means something like a part, a piece, etc.

Is there a word that covers what I mean?