Knight of Evil Slash, Meyrig

[ACT](RC):If you have a grade 3 vanguard with "Thegrea" in its card name, and your opponent's vanguard is grade 3 or greater, [COST][bind this unit], search your deck for up to two grade 3 unit cards with "Thegrea" in their different card names, reveal them, choose up to one "Epee De Justice, Thegrea" from among the revealed cards, ride it as [Stand], put the rest of the revealed cards into soul, and shuffle the deck. Until end of turn, the unit you rode is also regarded as the same card name as the card rode upon.