Energici
From BiblePortal Wikipedia
Charles Buck Theological Dictionary [1]
A denomination in the sixteenth century; so called because they held that the eucharist was the energy and virtue of Jesus Christ; not his body, nor a representation thereof.
Cyclopedia of Biblical, Theological and Ecclesiastical Literature [2]
a sect in Germany in the 16th century, so called because — they held that the Eucharist was the energy of Jesus Christ — not his body, nor a representation thereof. — Buck, Theol. Dictionary, s.v.