🌕Selenia

Does this mean that without a backstory/motivation for spirit bonuses, Orcs cannot inflict negative effects and automatically fail checks against other creatures' effects?

Yes. I think they and the Dwarves should be slightly changed, by the way.

Added 2 hours 50 minutes ago
The chronology of key events in the region according to the Selenian calendar. In general, there is no need to delve into all of this; to understand the setting at the time of the game, it is enough to read the last line. The start will be in the city of Grasaiki in the north of the kingdom.

Before the founding of Selenia
Approximately 10,000 years ago - the founding of Licilis.
Approximately 4,000 years ago - the founding of Neptunia.
Approximately 3,000 years ago - the founding of Silur.
Approximately 2,500 years ago - the founding of the first gem city.
Approximately 1,000 years ago - the formation of civilization in Saairt.
Approximately 500 years ago - Phos curses the poachers of Orikess.
Approximately 300 years ago - the emergence of the cult of Selena.
41st year - the birth of Yamtao Ahis.

0 - the founding of Selenia, the coronation of Yamtao as its first king.

After the founding of Selenia
39th year - the coronation of Katash.
44th year - the fall of Katash in battle against the chieftain of Orikess - Kukazuid the Terrible, during whose reign the Orcish tribes were united under one banner; the coronation of Agathon.
49th year - the death of Kukazuid the Terrible at the hands of Agathon; the end of the war between Selenia and Orikess; the return of Orikess to its tribal structure.
55th year - the beginning of the three-way war between Selenia, Silur, and Licilis (the reason is cited as the hostility between Silur and Licilis, as well as the disapproval by both of Selenia's rapid development).
80th year - the end of the fruitless three-way war.
83rd year - the coronation of Emoto.
86th year - the beginning of the wars between Selenia and neighboring human states.
111th year - the unification of all the people of the region under the single flag of Selenia.
118th year - the coronation of Atkio; the beginning of a civil war between supporters of Selenia and the annexed territories.
123rd year - the end of the civil war, victory for the supporters of the crown.
125th year - Atkio dies during large-scale riots caused by a multitude of social problems and famine, which were the result of years of wars; the coronation of Lestbaf.
126th year - one of the chieftains of Orikess, known as Nuseg, takes advantage of the situation in Selenia to seize the northeastern lands of the kingdom.
127th year - Lestbaf agrees to give Nuseg one of his daughters, Princess Shikamu, so that he would leave the crown's subjects in peace and rule the captured lands as a duke; Nuseg does not keep his word; Lestbaf jumps out of the window of his palace; the coronation of Kharbid; the crown pays tribute to the Orcs so that they would not terrorize at least the lands that have not yet been captured.
135th year - Kharbid drives Nuseg away.
138th year - Kharbid restores order in Selenia.
144th year - Kharbid leads Selenia to a period of peace and prosperity.
215th year - the coronation of Xilobi.
219th year - the coronation of Tikonderoga.
222nd year - Prince Seriz's expedition to the underworld ends with the establishment of friendly relations with several city-states of the Gems.
226th year - Prince Seriz's expedition to the underwater world ends with the establishment of friendly relations and his marriage to one of the Neptunian princesses.
231st year - Prince Seriz's expedition to Saairt ends with the establishment of friendly relations with the inhabitants there.
233rd year - the coronation of Seriz.
234th year - the beginning of a large-scale war with Orikess.
240th year - Orikess is conquered by Selenia.
251st year - Seriz manages to achieve the establishment of diplomatic relations with Licilis and Silur.
259th year - Pandinus sets off north.
285th year - the founding of the Pandinus Empire.
300th year - the coronation of Yamtao II.
309th year - the coronation of Elb.
320th year - the beginning of the dark century of Pandinus.
348th year - the coronation of Yamtao III.
383rd year - the coronation of Attin.
400th year - the beginning of a major war between Silur and Selenia; Attin dies in battle against the troops of Silur; the coronation of Noro.
408th year - the victory of Selenia over Silur; Jarknaa (a province of Silur rich in iron and minerals) passes into the possession of Selenia.
420th year - the end of the dark century of Pandinus.
444th year - Noro dies during an unsuccessful magical experiment to prolong life; the coronation of Noro II.
514th year - the coronation of the young grandson of Noro II, Yamtao IV.
581st year - the era of the reign of Yamtao IV, during which power in the country passed from the hands of the royal family to the hands of the rich entrepreneurs of the country, ends; the new rulers of Selenia crown Seriz II. Seriz II, like his predecessor, appears in public only occasionally and has no relation to the governance of the country.
617th year - today; the king-hedonist spends time in luxury and pleasure, not caring about the state of the country; the elite squeezes the last juices out of its inhabitants; banditry flourishes in the country; the law protects only the interests of the rich; attempts by friends from Neptunia and other friendly countries to help Selenia do not lead to any positive changes, as this help remains plundered by greedy officials and landowners.


Added 10 minutes ago
Approximate geography

                   Pandinus
                           ↑     Orikess
Licilis ← Selenia → Neptunia (underwater kingdom)
      Silur             ↓
                      Saairt