How do I reveal sprite on layer with a blend option?

So, I can have a black layer and illuminate through it with a sprite by uding a multiply blend option on the layer.

I want to do something similar but without a black layer- I want to have a "scanner" sprite that is a circle and reveals invisible sprites, but I need the layers below to still be visible, so a black layer is not an option.

Is there a blend mode or similar that could achieve this? Maybe two sprites on a layer that only become visible where they overlap?

Maybe two sprites on a layer that only become visible where they overlap?

Yes, put both sprites - the one you want to reveal and the mask - on a separate layer, enable own textures and set a blend mode on the mask. See the Blend Modes example in the editor, it demonstrates all modes.