If Satan were a gardener, his garden would be full of these. They're Infernal Roses, the plantlife of Hell, Demons in flower form. Their pollen is really, REALLY bad for you.In-game description
The Netherose is the Stage 3 magic-balanced form of the Ruin group.
Netheroses were removed from the game before it was released, so although their data still exists, they do not appear anywhere.