Perfection

Perfection is a trait unique to the Emperor's Children Legion.

Cards with Perfection trigger an additional or enhanced effect if playing the card used up all the remaining available Energy for the turn.

Because of the Emperor's Children access to energy manipulation cards like For The Emperor and Tactical Brilliance and Warlords like Saul Tarvitz, it is possible to trigger the Perfection effect of more than one card in a turn, even if you have 0 Energy available.