Can a slug be God?

[Kingpin]

In the scenario you described I would define the slug as a Creator, not a God.  Why?  Because the slug died.  Death is a natural occurrence.  ALL biological entities are constrained by the limits of nature and will cease to exist.  "God" by definition is outside of natural law, space and time and would have no limits.  Limitations only make sense in a universe governed by demonstrable limits.  This concept is difficult to grasp since we are constrained by limits and have no way to apply personal experiences to such deistic qualities.

A "God" is really just an entity that is outside of and not limited by their creation.  They make the rules, they can manipulate as they choose to and the creation is bound to the limits set upon it.

Suppose it was a tri-omni slug that was not constrained to die, but permitted itself to die (entailing that it had morally sufficient grounds for permitting this). Then would it be God?

Sure.  I don't see why not.