Below you can find information on the various Miracles. Each miracle can be activated for a period of time. After the end of the blessing's duration, the miracle needs to cool down before it can be activated again.
There is a maximum of 5 levels of faith. To increase the levels of faith for the miracle, members on the island can donate any resources to the miracle that is not produced on that island.
To be able to use the max capability, every town on the island that has temple in it must allocate at least 1/5th of the town's citizens to priests in the Temple. Priests generate faith to increase the power of the miracle. This can make the miracle system hard to use as it requires players on the island to collaborate. The larger the population on the island, the more priests that need to be allocated. The Temple building is required to be able to activate the miracle. The miracle affects all of your towns, not just those on the island.