Wisp Dye

This one goes flat. There is no pattern and no cycle, just a single bright cyan laid over the whole piece, which turns whatever you dye into a solid silhouette. That is either exactly the effect you wanted or completely wrong for the item. Detailed armor loses all of its shading under it. Wings, capes and hoods, which read as shapes anyway, come out looking deliberate.

The color is lifted from the light pet that comes out of a Wisp in a Bottle, so running the two together reads as one effect rather than two.

It arrives late, after Plantera, and only through Strange Plants traded in. That is not something you set out to get. It appears in the rotation while you are turning plants in for other rewards.