Constricting

The "constrict" ability uses spectral energy to wind a constricting band around dial-like objects or opponents and can be used in the spectral and material realms (any creature residing in the spectral realm cannot really interact with objects or creatures of the material realm, thus in the spectral realm the constrict ability can only be used against spectral realm enemies). Perhaps the reason why Dumah evolved this ability was because of his spirit residing in the spectral realm where he became a vampire wraith, in the spectral realm whenever a vampire wraith attacks Raziel they have a stream of his life energy siphoned to their mouths (perhaps that's how the constrict ability started; Dumah probably based his dark gift off the "stream spectral-energy ability" vampire wraths have, but to be used as a tool or a weapon). This dark gift bears a small resembalance to Magnus' "Immolate" dark gift from Blood Omen 2 in that both gifts "circle" around the enemie in order to damage it. Kain absorbs this gift from Magnus in Blood Omen 2 (years before Soul Reaver 1). So whether Dumah evolved this gift genetically/naturally (inherited in a different form from Kain after he absorbed it from Magnus) or just by residing in the spectral realm is unknown. After Soul Reaver 1 Raziel no longer has this gift. Perhaps because of the encounters with Moebius' staff and the broken Soul Reaver of King Wiliam The Just in Soul Reaver 2. Moebius' staff is meant to incapacitate vampires but has the same effect on Raziel's wraith-blade. If it has this effect on the wraith-blade, then it should have a greater effect on the constrict dark gift because the wraith-blade is a soul (the soul of another Raziel to be precise [due to the effects of time-travel]), while the constrict dark gift is just spectral energy (the energy of a soul, not the soul itself). If this is true, then this would explain why Raziel still couldn't use this gift even when his wraith-blade returned. When Raziel met with the broken Soul Reaver in William's chapel and allowed his wraith-blade reaver to meet with the broken Soul Reaver, the physical Soul Reaver became repaired and changed the nature of Raziel's wraith-blade (at the cost of his life enhancements from Soul Reaver 1) to allow him to summon it at will, but if used on his opponets it would damage their souls and/or feed on them. Also when overused, the wraith-blade reaver's hunger coil winding around Raziel's health meter would make a complete circle and feed on Raziel's health. Perhaps this is the new form of the constrict ability; to be the wraith-blade reaver's hunger coil and to allow Raziel to rotate dial-like objects by hand.