I think I saw it on Patreon (?), it revolves around a witch/sorceress (?) that has to orgasm to charge her magical powers; she's accompanied by a human witchhunter that she turned into a gargoyle on accident. The webcomic is a nice mixture of sexy and funny, the humor reminds me of Oglaf, that's why I'm adding one of those, otherwise the picture is NOT related.
The Cummoner by Totempole 666
Great comic!
http://www.totempole666.com/comic/first-time-for-everything-00-cover/
>>14980316
Yes, that's the one! Thank you very much! :D