Sklaverei

is a technique used by Sternritter "J" Quilge Opie with his Quincy: Vollständig, Biskiel, active.

Description
This technique uses the most basic ability to gather Reishi in the most powerful way: by enslaving it. It can literally tear away the components that make up spiritual objects, such as those that make up Hueco Mundo and Soul Society, as well as the bodies of spiritual beings. When the body of a spiritual being is affected by this power, Quilge can literally assume the characteristics and associated capabilities of his victim. However, the transformation is not permanent, as the power absorbed eventually vanishes. Additionally, Sklaverei is not usable if Quilge's Heiligenschein is destroyed, and will automatically cease if it is destroyed while in use.

Trivia

 * After Quilge absorbs Ayon with Sklaverei, he notes that his "holy wings are tainted by this wicked beast", likely referring to the fact that Hollow essence is inherently toxic to Quincy.
 * In Ryōgo Narita's novel Bleach: Can't Fear Your Own World, it is established that Sklaverei is an ability that all Sternritter can use with their Quincy: Vollständig active. It is also revealed that Sklaverei decomposes Reishi to its most fundamental level upon absorption, hence allowing Quincy to assimilate Hollow Reishi without danger.