Shadowstep turns you into black mist and red moths for a moment, so you cover distance almost instantly. At night it is your main way up walls and towers.
Use it to jump gaps, reach ledges and get onto rooftops fast. It is how you get into Vicho's Emporium by the balcony and up Svartrau's walls.
It is a vampire power, so it only works after dark. By day Coen has to climb and walk like anyone else.
Image: Rebel Wolves / Bandai NamcoBlood Surge
Blood Surge is a night-only Vampirism ability that makes a target burst from the inside through their own blood. You unlock it by drinking Xanthe's blood, so it is tied to her questline.
Compel Soul
Compel Soul is the first Witchcraft hex Coen learns, from Anca, after Laslea is sacked. It makes the recently dead replay the moments before they died, which is how you crack many investigations.
Crimson Rush
Crimson Rush is a Vampirism power that makes your active abilities hit harder the healthier you are. It is open from the start, so you only need Corruption and skill points to learn it.
Mesmerise
Mesmerise is a Vampirism power that lets you take control of an enemy's mind. You unlock it with Lacra's blood during The Night of Horrors, so it comes from story progress.