Add a new rule to the ruleset, called Bridges:

All Islands have a tracked variable called Bridge, which is either the name of another Island followed by a number in parentheses or “-”, and which defaults to “-”.

Whenever an Island rolls Birds, Spores or Continental Plate on a dice, they may change their Bridge to the name of a single other Island with the current round number in brackets after it. An Island is said to have a Bridge to an Island that is named in this way. Bridges are not inherently reciprocal

Add the following to the end of the rule Orphan Faces:

The following are a list of Bridge Faces. Each Bridge Face has a threshold that must be met in order to be added to a dice, in addition to its Mana cost.

* Birds (Threshold: Island must have an Animal Biomass of at least 10 and must have at least one Crag)
* Spores (Threshold: Island must have a Stream of at least 5 length and a Foliage that is higher than zero)
* Continental Plate (Threshold: Island must have Rare Minerals, at least 3 Caves and no more than 5 levels)