[CONT]: Sentinel [AUTO]:[Counter Blast (1)] When this unit is placed from hand to (GC) during the battle that your vanguard was attacked, you may pay the cost. If you do, call five cards from the top of your deck to (GC). [AUTO]:[Choose a card from your hand, and discard it] When this is placed on (GC) from your deck, you may pay the cost. If you do, return this unit to your hand, call the top card of your deck to (GC), and that unit gets [Shield]+5000 until end of that battle.