Ancestor worship is a decision that can be taken by any defensive pagan, Tengri pagan, or reformed pagan that has taken the Ancestor Veneration Doctrine. It requires The Old Gods DLC.
Upon taking the decision the player will be the presented with the option of what area they'd like to ask for assistance in. These are limited to Health, Family/Love, War, Prosperity, and Wisdom.
The player will then be presented with the option of what type of sacrifice to make. The options are sacrificing a body part, sacrificing a random prisoner/non-important courtier, a large feast, or a small sacrifice. When sacrificing a body part with The Reaper's Due active, the result will the first one possible of: 
(arguably a positive trait), 
, or 
.
Based on the previous choices a related event may fire somewhat shortly after using the weights in the following tables (Note that these are weights and not percentages).
| Health Results |
Limb |
Human Sacrifice |
Large Feast |
Small Sacrifice
|
| Remove Disease |
10 |
5 |
1 |
1
|
| Gain Robust |
15 |
10 |
1 |
1
|
| Gain Health Bonus |
30 |
30 |
50 |
15
|
| Gain Illness |
5 |
5 |
10 |
15
|
| Nothing |
35 |
30 |
50 |
20
|
| Family/Love Results |
Limb |
Human Sacrifice |
Large Feast |
Small Sacrifice
|
| Good with People |
10 |
5 |
1 |
1
|
| Lover |
15 |
15 |
15 |
5
|
| Friend |
15 |
15 |
15 |
5
|
| Good Listener (10 yrs) |
10 |
10 |
20 |
10
|
| Pet Cat |
10 |
10 |
15 |
20
|
| Rival |
5 |
5 |
10 |
20
|
| Nothing |
35 |
35 |
35 |
35
|
| War Results |
Limb |
Human Sacrifice |
Large Feast |
Small Sacrifice
|
| Increased Levy |
15 |
10 |
5 |
1
|
| 100 Mil Tech |
25 |
20 |
10 |
5
|
| Commander |
25 |
20 |
10 |
5
|
| Robust |
15 |
10 |
5 |
15
|
| Leadership Trait |
10 |
10 |
20 |
15
|
| Maimed |
5 |
5 |
10 |
15
|
| Nothing |
35 |
35 |
35 |
35
|
| Prosperity Results |
Limb |
Human Sacrifice |
Large Feast |
Small Sacrifice
|
| Increase Random Prosperity Level |
1 |
5 |
5 |
1
|
| 100 Econ Tech |
15 |
15 |
15 |
5
|
| Bargainer (10 yrs) |
10 |
15 |
15 |
10
|
| Overtaxed Subjects (5 yrs) |
5 |
5 |
10 |
10
|
| Nothing |
20 |
35 |
35 |
20
|
| Wisdom Results |
Limb |
Human Sacrifice |
Large Feast |
Small Sacrifice
|
| Shrewd |
10 |
5 |
1 |
1
|
| Wise Woman |
15 |
15 |
15 |
5
|
| Owl |
15 |
15 |
15 |
5
|
| New Insights (10 yrs) |
5 |
10 |
20 |
10
|
| Dull |
3 |
5 |
10 |
10
|
| Nothing |
20 |
35 |
35 |
20
|