Dragontree Offshoot, Diguei

[AUTO]:When this unit is placed on (RC) other than during the battle phase, if you have a grade 3 or greater vanguard with "Solrairon" or "Griphogila" in its card name, [COST][Soul-Blast 1], look at the top seven cards of your deck, choose up to one card with "Solrairon" in its card name or up to one "Masque of Hydragrum" from among them, discard it, shuffle the deck, look at the top card of your deck, and put it on the top or bottom of the deck.