Dragontree Offshoot, Diguei: DZ Booster Set 06: Generation Dragenesis

[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.