If Proposal: Underlay, Underlay, A Rebar, A Rebar was not enacted, skip the rest of this proposal.

Create a new dynastic rule named “Threat” with the following body:

The Threat is a publicly tracked list of values in the format “X, Y, Z” that may contain up to three items.

As a Weekly Communal Action, an Engineer or the City Architect may Trigger, which is an atomic action with the following steps:
* Starting from the leftmost item, carry out the effect of the Disaster corresponding to the item in the list once for every item.
* Blank the Threat
* Randomly select a Disaster and add its name to the Threat. Repeat this step until the list has three items.

A Disaster consists of a Name, an Effect and a Description (which is flavor text). The Disasters are listed in the table below:

{| class=“wikitable sortable”
|-
! Name || Effect || Description
|-
| Saboteur | Randomly select a Block that isn’t _ and set it to _ | Hey, who took this block out?
|-
| Earthquake | Randomly select 3 Blocks and Weaken them | At least it didn’t collapse immediately…
|}

In the rule “The Building”, subrule Integrity, change “A Block’s Integrity is calculated as follows: (Support) - (Height), plus or minus (Pressure)” to:

A Block’s Integrity is calculated as follows: (Support) - (Height) - (10 if it is Weakened), plus or minus (Pressure)

In the rule “The Building”, append the following paragraph to the end of the subrule Integrity:

A Block may be Weakened by another action if it does not contain a _. When this happens, change the letter representing the Block item from upper case to lower case. If it is already Weakened as displayed by a lower case letter, change it to _.