If Satan is evil and God is good, then what is death in God's master plan other than the reaper of life?

Many people don't think of death as an entity in God's master plan that has any role to play. Yet, people say that other people that cause death are evil. For example, Hitler or Stalin were evil men because they caused death or famine on a wide scale, knowingly.

To believe in this sentiment and what it presupposes is that death obeys logical progression from events imbuing the subject to be accountable for the decision or deed they may have promulgated, again, knowingly.

I'm not sure if this is clear, but to precise it would mean that the agent responsible for causing the death of others would be implicated in moral acts. But, the qualifier itself is in the domain of 'death' itself. Therefore, death would know who or in what way a person was responsible for a moral action, in this case or in regards to causing death.

With this in mind, it seems to me that when death is responsible for taking life he himself is also aware of what actions that they did in a causal manner led to an increase in total death itself.

If the above is true then death obeys logical progression.