YS325 edits:
New paragraph added to end of Environmental Hazards:
"Some hazards—like sunlight or holy ground—only apply to creatures which are vulnerable to the hazard, leaving others alone."
Marginalia:
HARRY: How does sunlight work with a vampire’s “Catch”?
BILLY: It’s an environmental hazard which does damage that satisfies the Catch condition, and counts as a compel on the vampire’s High Concept aspect.