Unlike other monsters, succubi and menads feel no desire to kill, do not crave human blood and usually do not, in fact, mean any harm at all. They are motivated by one thing and one thing only: an insatiable lust. They try in vain to slake this by engaging in sexual acts with any other humanoid species they encounter. While it must be admitted that their "victims" rarely put up much resistance, this does not mean succubi and menads do not present any danger: their never-ending advances, though pleasurable at first, have pushed more than one man to madness or even death.
If played on your opponent’s side, then after 2 turns, at the start of your turn, move the Highest other Unit on its row to your side.
- See this subject on The Witcher wiki: Succubus