Iron Arm Dragon, Gargurex

[AUTO]:When this unit is rode upon by "Iron Emperor Dragon, Gargurex", Energy Blast (3), look at the top seven cards of your deck, choose up to two <Dinodragon> with different card names from among them, reveal them, choose one of the revealed cards, put it into hand, discard the rest of the revealed cards, and shuffle the deck. [ACT](Drop):If you have a grade 3 or greater <Dinodragon> vanguard, Energy Blast (3), and call this card to (RC).