:Sentinel :You may only have one "Elementaria Sanctitude" in a deck. Play this with [discard a card from your hand], if you do not have a card other than "Energy Generator" in your crest zone! If your opponent has a card other than "Energy Generator" in their crest zone, you can play this ability without paying the cost. Choose one of your units, and it cannot be hit until end of that battle. Remove this card.
:Sentinel
[discard a card from your hand], if you do not have a card other than "Energy Generator" in your crest zone!