A Song of Ice and Fire House Fortunes for Birthright AD&D 2nd Edition

In the A Song of Ice and Fire RPG House Fortunes is a thing you can roll for once per month. This I think is something that could easily be added to the Birthright domain turn as another step.

To make this work add up all of your holdings and provinces and for every 10 that you control you get a +1 to the roll. Also add your Regent's character level to the roll. Aditional modifiers could apply if you possess non-weapon proficiencies that apply. I suggest only a +1 modifier per proficiency however. 

D20+lvl+mods	House Fortune	D20+lvl+mods	House Fortune
1	Disaster	17	Decline
2	Disaster	18	Blessing
3	Curse	19	Curse
4	Decline	20	Blessing
5	Disaster	21-22	Growth
6	Growth	23	Curse
7	Decline	24-25	Growth
8	Growth	26-27	Blessing
9	Curse	28	Boon
10	Decline	29	Curse
11	Growth	30-31	Blessing
12	Boon	32-34	Growth
13	Decline	35	Blessing
14	Blessing	36	Boon
15	Growth	37-41	Growth
16	Curse	42+	Boon

Boon

Choose two of the following: a beneficial alliance, a peace treaty to end a war, an arranged marriage, a free tradecroute is created, one new holding (level = 1D4), 1D8 GBs, or 2 armies.

Blessing

Choose two of the following: a peace treaty to end a war, end border crossings and conflict, one new holding (level = 1D2), 1D4 GBs, 1 army, increase an existing holding 1D2 levels.

Growth

Increase a Province by one, a holding by one level, and build something for free.

Decline

Decrease a Province by one or decrease a holding by one level.

Curse

Choose two: 1D4 armies disband, lose 1D4 GBs, holding destroyed, all of the holdings of one type decrease by 1 level.

Disaster

Choose two: An alliance is broken, plague in the land (decrease all provinces by 1), -1D6 GBs, lose a province, 1D4 holdings are destroyed, lieutenant is murdered, 1D4 roads are destroyed, all holdings of one type are decreased by one level.

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Artist: Albrecht Altdorfer