PF官方的規則原文節錄重要部分：
Many traits grant a new type of bonus: a "trait" bonus. Trait bonuses do not stack—they're intended to give player characters a slight edge, not a secret backdoor way to focus all of a character's traits on one type of bonus and thus gain an unseemly advantage. It's certainly possible, for example, that somewhere down the line, a "Courageous" trait might be on the list of dwarf race traits, but just because this trait is on both the dwarf race traits list and the basic combat traits list doesn't mean you're any more brave if you choose both versions than if you choose only one.
紅字部分的中文翻譯(摘自PF版上的翻譯)
很多背景特性提供了一種新類型的加值：背景加值（Trait Bonus）。背景加值互不疊加。
再來看看兩個降環背景的原文
Magical Lineage
One of your parents was a gifted spellcaster who not only used metamagic often, but also developed many magical items and perhaps even a new spell or two—and you have inherited a fragment of this greatness. Pick one spell when you choose this trait. When you apply metamagic feats to this spell that add at least 1 level to the spell, treat its actual level as 1 lower for determining the spell’s final adjusted level.
Wayang Spellhunter
You grew up on one of the wayang-populated islands of Minata, and your use of magic while hunting has been a boon to you. Select a spell of 3rd level or below. When you use this spell with a metamagic feat, it uses up a spell slot one level lower than it normally would.
可以發現，在官方規則中，只針對
"trait" bonus即"背景加值"說明其不可疊加。而對另一種運作機制就沒有詳細說明。
然後，可能有人會把bonus延伸，認為只要從背景得到的好處，就可以用bonus計算，然而bonus在CRB一開始就有明確定義了：
官方原文網址Bonus: Bonuses are numerical values that are added to checks and statistical scores. Most bonuses have a type, and as a general rule, bonuses of the same type are not cumulative (do not "stack")—only the greater bonus granted applies.
從紅色地方來看，Bonus很明顯不適用這兩個超魔降環背景，所以trait bonus不能疊加的特性，跟兩個超環降魔
一點關係都沒有。
對於規則模糊問題，我曾經遇過兩種判法：規則沒說不行就代表可以VS規則沒說可以就代表不行。這兩種判法都有人支持。
所以現在是你家GM要決定的點了，即：
「如果一件事情，規則完全沒有提及，既沒有說不可以，也沒有說可以的話，那麼這件事情到底是『可行』還是『不可行』?」(順便樓主的問題，我的回答是：可以，但我是鶸，我的可以可能不是樓主的可以)
人類始終無法互相了解.PNG
