Sanctuary Guard Dragon

:If your opponent's vanguard is grade 3 or greater, and you have a grade 1 unit, this unit's original becomes 2. :At the end of the battle it attacked while not boosted, [ 1 & Rest] three of your back row grade 1 rear-guards & discard a card from your hand], this unit, and all of your front row units get +10000 until end of turn.