Knight of Great Favor, Orcades

:When this unit is placed on from hand, choose a grade 3 card with "Rezael" in its card name from your ride deck, and you may reveal it. If you revealed a card, or you have a grade 3 or greater vanguard with "Rezael" in its card name, search your deck for up to one non-sentinel normal unit with grade less than or equal to your vanguard, discard it, and shuffle the deck. :When this unit attacks a vanguard, if you have a grade 3 or greater vanguard with "Rezael" in its card name, until end of that battle, this unit gets +5000, at the end of that battle, put this unit into soul, and draw a card. If you used a this fight, it gets +10000 instead of +5000. (This effect is mandatory)