Looking for tumblr crossovers

Heyo

I'm looking for tumblrpones to have crossovers with for my own pony tumblr - the [url=asktheexaltedponies.tumblr.com]Ask The Exalted Ponies which runs in parallel to my story here

I'm chiefly looking for three different types of crossovers:

1) Ones where Cash Charmer (The wealthy, charming and mind-controling stallion) either hits on your OC and drama ensues (Cash will do anything that walks...) - and he's really not ashamed of what he does. He'll offer money, try to use mind-control charms and magic... none of which necessarily has to work, but part of the point of these crossovers would be to portray Cash as a scumbag. These can be NSFW.

2) Ones where Sunrise Glow (Selfrightous, sanctemonious, always-hooded, holier-than-thou adolecent almost-but-not-quite mare) looks for ponies to recruit as cultists to worship Celestia (Who is more of an actual god and not a ruler of the land in my setting) Will ask nicely first, but like any zealot the end justifies the means - so she'll ultimately gladly use mindcontrol charms to get your OC to tag along, and she'll really whip out the mindcontrol charms for actual cult services. Basically your OC could, for example, resist her charms and start wondering "Why are all these ponies here acting like brain-dead zombies..." since your OC will be the only one with free will. How your OC wants to handle things after that is a little up to you, could simply flee, or confront Sunrise, or try to save the cultists. Lots of options.

3) Bright Machine Speaker (Old former military doctor now super magic doctor and craftspony) - if your OC has any kind of medical condition he can fix it. And I mean any. Limb regeneration, a cure for allergies, mental issues, unicorn horn broke off, mutations (Poison Joke, curses and whatnot), visual imparement (If you don't want your OC to wear glasses anymore...) - basically, there isn't the thing he can't cure. This is kind of tumblr crossover will be much more easy-going than the two others. And don't mind Speaker's very posesive shapeshifting girlfriend, even if she helps him by occasionally molding flesh as if it was wet clay.

Any takers?