[AUTO]:When this unit is placed on (RC), if you have three or more other rear-guards with "Jewel Knight" in their card names, [COST][Counter-Blast 1 & reveal a grade 3 card from hand], search your deck for up to one grade 3 card with "Jewel Knight" in its card name, call it to (RC), and shuffle the deck. At the end of that turn, put that unit into hand, choose a card from your hand, and discard it.