I might list a daylight spell there with the continual flame, but that looks really good! I'm glad you remembered the amber lotus.
What, you mean "such as a
continual flame or
daylight spell cast on the square occupied by the plant"?
I don't like that much, I'd rather have a
daylight affect a wide area - especially as it's supposed to be sensitive to daylight.
Something like "If shimmerweed with open flowers is suddenly exposed to intense light such as a
daylight spell (or a
continual flame spell in the same square as the plant)"
The only other change I'd make is to alter the last sentence to:
"While shimmerweed is not directly dangerous, creatures confused by a shimmerweed's defensive lightshow may be attacked by any dangerous creatures that live nearby."
No objections to that.
Revising...
Shimmerweed (CR 1)
Shimmerweeds are magical wildflowers found in temperate woods and plains. This beautiful plant resemble a dandelion gone to seed that has been spun from fine glass. Shimmerweed grows in small patches which occupy a single 5-ft square. The plants are too small for the square to count as difficult terrain. All the shimmerweed plants in a patch are connected to each other through their roots.
Shimmerweed feeds on moonlight. It cannot tolerate bright sunlight on its delicate petals, which overloads its magical ability to feed on light, so only opens its dandelion-like flowerhead at night. The flowerhead catches the moonlight and refracts it into a dazzling spray of colors. This lightshow can cause
confusion (as the spell) in any creature within a 15 ft. radius of the patch (DC 16 Will save to resist, duration 2d6 rounds). The confusion is a mind-affecting enchantment (compulsion) effect. Shimmerweed is completely harmless during the day and on moonless nights.
A patch of shimmerweed plants is easy to destroy (AC 10, 2 hit points), but will regrow within a month unless its roots are killed. If shimmerweed with open flowers is suddenly exposed to intense light such as a
daylight spell (or a
continual flame spell in the same square as the plant), the entire patch shatters into dust and is permanently destroyed.
While shimmerweed is not directly dangerous, creatures confused by a shimmerweed's defensive lightshow may be attacked by any dangerous creatures that live nearby.