And Fulfill the Knight's Ambition of Yore!

Put this card into soul, draw a card, choose a card from your hand, call it to if it is a unit card with grade less than or equal to your vanguard, and discard it if it is not. If your opponent's vanguard is grade 3 or greater, that called unit gets ":This unit cannot be chosen by your opponent's card effects, and during your turn, this unit gets +5000." until end of your opponent's next turn.