For any prompt: Patchouli can use her magic to give herself a cock or do the same for their partner if they're interested in exploring that.

Monstergirls/boys

You pretty much understand how this works. I'm pretty open to whatever you want to work with here. Patchouli can be a monstergirl instead, if you want. If she is, she's likely to be a succubus. Does that count? It does now.

Monstrous Scale

Can go hand-in-hand with the former. This is about partners who are extremely tall. Like, absolute giants, ten feet tall or more. Also included in here are cocks (or other penetrations) that are also huge. Or just one of these two things.

I lumped these together because I thought it made sense at the time. Yeah, that was not super smart of me.

Castmates

Does this even count?

Oh well. I'm especially interested in other SDM-folk (Remilia, Sakuya, Koakuma, Meiling), characters who are based on or reference fictional characters (e.g. Byakuren, Seiga) or authors/poets (e.g. Yuyuko, Komachi), or who are just smart or nerdy in general (e.g. Eirin, Sanae, possibly Sumireko?) because that's whose company she'd be most interested in keeping.

Titfucking (and other breastplay stuff)

Can't not put this one forward. Patchouli is pretty stacked.

Tentacles

Controlled via Patchouli's magic. With her multiple elements, she can make this happen a number of different ways. Vines? Actual, like, tentacles of some kind of creature? Tendrils of generic magical energy?

This lends itself easily to multiple penetration, various forms of bondage, and lots of cum, so anything that fits with those that you'd be interested in (or not), throw some notes about that, too.

Maid Service

Patchouli being sexually served by maids. Or just role-playing it, complete with the appropriate uniforms (yes those are probably the most important part here).