Lurid

They never see Lurid coming. Dragons enter an intricately painted door, a lovely undiscovered grove, or house they never noticed on their street. The world goes weird. Senses lie as they are drowned in a whorl of color and sound, a cacophony of discordant melodies and impossible patterns that send them spiraling.

Those who have heard its story know to shut their eyes tight and wait it out, keeping their minds carefully blank. Survivors ignore the distress of overstimulation and the distant, echoing laughter that sounds like breaking glass. Those who fight back and try to find structure and reason in the chaos find themselves wandering endless passages and buildings of non-euclidean geometry. They gradually lose any sense of who they were, becoming one of the impossible neon creatures that haunt those twisted spaces.

Despite the horror of their legend, dragons stuck with a mental block can leave Lurid an offering to clear it. If the gift is sufficiently colorful, they will have wild, chaotic dreams filled to the brim with creative potential. Useful, provided you can decipher them. Just hope the dreams only last a few nights, and that they don't start to bleed into reality.