In the rule Loyalty, replace

As a weekly action, a Cardinal may change their Loyalty.

with

As a weekly action, a Cardinal other than the Pope may change their Loyalty.

Create a new dynastic rule titled Invasion

As a weekly communal action, a Cardinal may begin an Invasion by making a blog post to that effect. This post must name the Invading Power, chosen from the list of possible Loyalty values in the rule “Loyalty”. An Invasion is a Votable Matter.

The Attack Strength of an Invasion is equal to the sum of the Benefices of Cardinals whose Vote is FOR the invasion
The Defence Strength of an Invasion is equal to the sum of the Benefices of Cardinals whose Vote is AGAINST the invasion

If the Pope is not a Roman, and the Invading Power is France or Spain, the Attack Strength is increased by 5
If the Pope is a Roman, and the Invading Power is Florence, Naples, or Venice, the Attack Strength is increased by 5.
If the Pope is a Foreigner, and the Invading Power is Colonna or Orsini, the Attack Strength is increased by 5

If an Invasion has been pending for more than 48 hours, and its Attack Strength is greater than or equal to its Defence Strength, it may be Enacted by any Admin. The Pope’s Loyalty is changed to that of the Invading Power.
If an Invasion has been pending for more than 48 hours, and cannot be Enacted, it may be Failed by any Admin.

In the rule Vices, add to the list of Vices

* Ira: A Cardinal whose Vice is Ira is considered to have one additional Benefices for the purposes of the rule “Invasion”

In the rule Curia, add to the list of Offices

* Captain General of the Church. The Captain General of the Church is considered to have double the number of Benefices for the purposes of the rule “Invasion”