Finecoat Maltese

:Sentinel :[Choose a card from your hand, and discard it] When this unit is placed on from hand, you may pay the cost. If you do, choose one of your units that is being attacked, and it cannot be hit until end of that battle. (Drop zone):[Choose two of your successful rear-guards, and retire them] At the end of your turn, you may pay the cost. If you do, search your deck for up to one "Finecoat Maltese", reveal it, put it into your hand, and shuffle your deck.