Ahthrina the Blight

You find Ahthrina chasing a trio of knights through the forest, her moth wings beating slowly as she glides between the trees. She's the smallest and slenderest of the titans. An elegant, pale, spectral woman with a torrent of midnight-coloured hair, dark eyeshadow, a black toga pinned with a silver badge shaped like a crescent moon. Her wings are white, patterned with grey ****'s-heads.

The paladins, three blondes in shining armour, squeal and scatter as Ahthrina descends on them from above, cackling with malevolent glee. Two escape her grasp. The third doesn't.

Hidden in the bushes, you get a great view of what happens next. There's a moment of silence as Ahthrina's hands, their fingernails painted black, brush against the paladin's plate mail. Then, the girl begins to squirm, as her armour slowly begins to rust. It falls to the ground in flakes, corroding and dissolving into powder, leaving her first in a chainmail undershirt and then in a linen under-undershirt. Greaves, boots, breeches, all dissolve away until the brave, blonde knight is finally stripped bare.

Ahthrina's fingers brush against her back.

The knight moans and arches her back, all dignity lost in an instant as she collapses into a writhing puddle of pleasure. It's just as you suspected. Ahthrina's touch doesn't bring regular ****. It only brings what the fantasy French call "the little ****". That is, it makes you cum.

If you're a paladin sworn to chastity, who's made a holy vow to never submit to evil, that might be almost as bad.