【求教】有大佬知道这个Irrisen affinity具体是什么意思吗

[夜歌Nachtlied]

在d20和男神站都没能找到，还请大佬们帮帮忙
Irrisen Icemage
Source Cities of Golarion pg. 62
You were born with the power to drive ice and snow as others drive their slaves.

Prerequisites: Sorcerer, Irrisen affinity, may only be taken at first level.

Benefit: All of your spells with the cold descriptor are cast at +1 caster level. Any spell with a different energy descriptor is cast at –1 caster level. Three times per day you may alter a spell you cast to deal cold damage instead of its normal damage; your +1 caster level for this feat applies to this variant casting.

[Cherik4ever]

伊利森（Irrisen）是格拉利昂内海地区的一个地区，大概Irrisen affinity说的是角色需要有伊利森背景才能选吧。（不是大佬，角色最近刚好在伊利森。）https://pf2.huijiwiki.com/wiki/%E4%BC%8A%E5%88%A9%E6%A3%AE 附带PF2wiki对伊利森的介绍。
PF1哪本书里也有来着但不想找了。

[杀菌@深坑未填]

要求你的角色背景设定要与伊利森（Irrisen）有关

[夜歌Nachtlied]

要求你的角色背景设定要与伊利森（Irrisen）有关

好的，多谢

[夜歌Nachtlied]

伊利森（Irrisen）是格拉利昂内海地区的一个地区，大概Irrisen affinity说的是角色需要有伊利森背景才能选吧。（不是大佬，角色最近刚好在伊利森。）https://pf2.huijiwiki.com/wiki/%E4%BC%8A%E5%88%A9%E6%A3%AE 附带PF2wiki对伊利森的介绍。
PF1哪本书里也有来着但不想找了。

好的，多谢

[NOKO]

Feats
    All of the nations in Chapter 2 present local feats. a local feat can only be selected for a nation in which the character grew up or for which he otherwise possesses local affinity. To gain local affinity, a character must live in a nation for at least a year and gain at least 2 ranks in Knowledge (local) while there. After that time, he is considered to have affinity for that nation for the purpose of qualifying for certain feats (although, of course, he must meet the feat’s other prerequisites as well).

屬於 3.5 時期的戰役設定。

要獲得區域親和，你需要符合其中一個條件：

• 出身於該地區。
• 在該地區居住一年以上，並在期間提升"知識技能（本地）"兩個階級。

如果你使用 PF1E 時期的 PFS 規則的話，以上與你無關。
"PFS 角色可以在修整期隨意取得任意地區親和，但同時只能擁有一個地區親和。"

在較新的遊戲資料中，本地專長（Local Feats）的設計被地區背景元素（Regional Traits）取代。

[夜歌Nachtlied]

Feats
    All of the nations in Chapter 2 present local feats. a local feat can only be selected for a nation in which the character grew up or for which he otherwise possesses local affinity. To gain local affinity, a character must live in a nation for at least a year and gain at least 2 ranks in Knowledge (local) while there. After that time, he is considered to have affinity for that nation for the purpose of qualifying for certain feats (although, of course, he must meet the feat’s other prerequisites as well).

屬於 3.5 時期的戰役設定。

要獲得區域親和，你需要符合其中一個條件：

• 出身於該地區。
• 在該地區居住一年以上，並在期間提升"知識技能（本地）"兩個階級。

如果你使用 PF1E 時期的 PFS 規則的話，以上與你無關。
"PFS 角色可以在修整期隨意取得任意地區親和，但同時只能擁有一個地區親和。"

在較新的遊戲資料中，本地專長（Local Feats）的設計被地區背景元素（Regional Traits）取代。

多谢解答