Revision Scientist, Delibelly

: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, and it cannot be hit until end of that battle. : 1 When this unit is retired from or , if you have a vanguard with "Bigbelly" in its card name, you may pay the cost. If you do, draw up to one card, and 1.