'thul's story project...

['thul]

These beings have begun to debate whether the more powerful golems need a stronger source of magical energy. Basing everything on that there is a certain limited amount of energy a mage can commit to a spell, as has been indicated several places in the story, means that the power imbued into a golem is also limited. Using this system would typically mean one of two things... either the golem will "exhaust" itself after a while, or it the golem is powered by channeling. The first case is obviously impractical in that a golem could stop working mid-battle, making them of limited use in extended combat. The second case means that a) the mage has to be alive to power golems - fatal flaw and b) a single mage can only power a certain number of golems at one time. also impractical.

Due to reasons above, 'thul have begun to debate an alternate source of power for golems, but not quite decided on what. Might be linking up to some central power source, might be taking of some (mostly) finite supply of power.
one of the more viable theories hinge on using the souls of the deceased. If the deceased have souls, they obviously have some sort of power, so why not put it to good use?