Sporadic Zero Dragon

[AUTO]:When this card is discarded from hand while riding from ride deck, look at the top seven cards of your deck, choose up to one set order from among them, reveal it and put it into hand, and shuffle the deck. [AUTO](RC/Drop):When your vanguard is attacked, if your opponent's vanguard is grade 3 or greater, COST [remove this card], and your vanguard gets [Power]+10000 until end of that battle. You cannot pay the cost for the [AUTO] ability of cards with the same card name as this card until end of turn.