A unit with Fear of the Flood is aware of their sinful existence on some level, and is thus afraid of a specific kind of divine retribution: the Great Flood in Genesis. Currently the only units with this fear are the the Nephilim, the Rephaim of Hinnom, the Anakim of Ashdod and Gath, and the "Lost Giants" of Ind and Feminie; incidentally, none of these people know any Water magic. Fear of the Flood is a Morale penalty in effect whenever it Rains, and (somewhat ironically) when Underwater.

Interestingly, Illwinter tells a story of sorts with the differing values of the Fear. The Nephilim have 10 points of it, since they are the direct products of sinful angels, and since their sinful proclivities are the strongest. The first Rephaim, direct descendants of them, were either taught the Fear or taught not to have the Fear, and thus have 5 points. The Rephaim of Ashdod view their decline as punishment enough and do not have the Fear, but the Anakim still have some unholy strength and are thus stricken with 4 points; meanwhile, Ind's Giants were directly punished and kept their strength, so they have the same level. In the Late Ages, Gath's Anakites return to their ancestors' Sin and the Fear grows to 5 points within them, but Ind's Giants remain Bloodless and are only 3 points Fear-full when Feminie releases them.

As a sidenote, coastal provinces can be flooded so badly that they sink beneath the waves; either as a freak accident with 1 and 4 (or worse) on the Scales, or as an incredibly spiteful move from a 65 mage with 100. This doesn't destroy the fort, but it does destroy the lab, and around half of the population. (The other half leaves.) Capital provinces cannot be flooded like this.