Across all seven races, the rarest and most terrifying form of marriage involves The True Name.
If two creatures trust each other entirely, they will step before a Judge of the Balanced Scale and whisper their True Root-Names into each other's palms. This grants each partner absolute metaphysical custody over the other's existence.
The Boon: They can trace each other across the continental emotional map, share hit points across any distance, and automatically succeed on saving throws against fear or madness if their partner is within sight.
The Bane: If one partner breaks this ultimate promise, the literalism of the continent triggers a catastrophic, localized Reality Crash—instantly transforming the unspoken betrayal into a physical curse that can dissolve their shared home straight back into the chaotic void of the Unwrought Wilds.