(Note that a Muslim nation’s Grand Vizier is identical to the Chancellor in all but title.)
The Chancellor relies on a high Diplomacy skill to affect politics outside of your realm. The three tasks available to him are:
- Improve Diplomatic Relations- Send your Chancellor to any county to improve the locals’ opinion of you.
- Fabricate Claims- Send your Chancellor to any county to secure a claim for you. Skilled Chancellors can also (randomly) secure a claim on a Duchy, rather than the county.
- Sow Dissent- Send your Chancellor to any county outside your realm to ruin relations between Vassal and Liege.
For the Chancellor, all successes and failures result in an Event for the player. The following table shows the Events possible, and the percent chance of each being triggered in the course of a year, as a factor of the Chancellor’s Diplomacy skill.
As you can see, all Chancellors with a Diplomacy skill of 13 or above will perform their assignments at maximum efficiency. However, there are other considerations that will send you scouting for characters with much higher Diplomacy than that.
Fabricating THE RIGHT Claims
Fabricating Claims is an important part of expanding your realm, and Demesne, but it is not always the right tool for the job. Before sending your Chancellor on a Fabricate Claims mission, it’s wise to take a good look at the de jure Duchy situation in the area. If you are a Duke, or can Claim or Usurp a Ducal title, then you may soon have free claims on some territories. If you are the Duke of Ulster in northern Ireland, but only hold two counties, you needn’t Fabricate Claims on the other two, as you can already press de jure Ducal claims which have the same result. You would be much better off sending your Chancellor to a county in another Duchy, so you can begin to take the counties necessary to claim the Duke title there, which will then grant you more de jure Ducal claims. (More details on the De Jure & Claims page.)
If you are looking to add a county to your realm, but not your demesne (it will belong to a vassal), and you don’t have a particular vassal in mind, you should check the county first to see if any claimants exist, and if they would be interested in joining your Court. If you find a willing Claimant, you can press their claims, declaring war to install them as Count or Countess, and adding them to your realm, if they meet the conditions of an Offer Vassalization check. (More details on the Claimants page.)
By understanding the available alternatives to Fabricate Claim, you can send your Chancellor only when necessary, and make the most of those long waits in between successes.
State Diplomacy is an opinion bonus applied to relations with those outside your inner circle (who are affected by Personal Diplomacy instead). Mousing over the State Diplomacy figure on your leader’s page, will show the breakdown of the State Diplomacy score. It is:
Leader’s Diplomacy + Chancellor’s Diplomacy + 1/2(Spouse’s Diplomacy)
The bonus to relations is 1/2 State Diplomacy, rounded down.
State Diplomacy also affects the rate at which Cultural Technologies advance. In the Technology tab, the number in the upper left of the Culture Advances column is the percent gain to those advancements enjoyed by your demesne. This bonus is the sum of your State Diplomacy and your State Learning.
Should a ruler die before his heir reaches legal age (16), the state will enter a regency period.
The Chancellor becomes regent, and his statistics are used in place of the rulers for determining State Diplomacy, State Martial, etc. During this period, it is not possible to replace your Chancellor. As such, it may be worthwhile to appoint a Chancellor who has a balanced skill set when you are faced with a very old ruler and a very young heir.
UPDATE: This is inaccurate. Others besides the Chancellor can become your Regent. I need to do more research on this to get the rules down. Sorry for the mistake. -Ryan 4/3/12