If there are less than 5 cards left in your deck when this card's Life Burst is activated, reveal the remaining cards of your deck. If there is a DevilSIGNI, add it to your hand. After that, refresh your deck.
Energe changes the way in which banishes are handled, but does not change the fact that a SIGNI is being banished. Regardless of the result of the banish, Anna Mirage's [Constant] activates when the action of banishing has been fulfilled.