Let the Shadow Thurible continuously generate miasma when fueled by Pure Terror.

[Sofy Happy]

When powered by Pure Terror, the Shadow Thurible shall emit miasma nonstop to draw in Ripple. Players can then lure Ripple into colliding with Boulderboughs.

I first put forward this suggestion when Ripple was introduced. Later, Geothermites were added as an indirect way for players to produce miasma. After extensive playtime though, this method proves overly cumbersome. Geothermites are hostile creatures with fixed territories. Getting them to spawn miasma at your desired location while fending off Ripple is a tedious process — especially when you have to repeat the whole routine four or five times.

Ripple’s loot does not justify how difficult it is to defeat. To enrich the volcanic biome’s ecosystem, it is vital to refine the overall combat experience against Ripple.

[Baark0]

I actually like this idea, as the retrofitted fumerole biome in my megabase world only has fumerole structure remaining. and I'm unsure if those regenerate or not, nor do I know how if miasma will be able to generate in my fumerole biome outside of geothermites.