If an instruction directs a player to look at or reveal cards in excess to the number of cards in a player’s Main Deck, that player looks at or Reveals as many as possible, but does not Burn Out, then proceeds with the rest of the instruction. 1. If there are insufficient cards among the looked at or revealed cards to perform subsequent actions to the revealed or looked at cards, any further instructions are ignored. This does not cause a Burn Out, even if those instructions would cause those cards to change zones. Reminder: Cards are considered in the zone of origin while being looked at or revealed, in this case the Main Deck.
§ 431.1.c Core Rules PDF (officieel)
§ 431 Burn Out
§ 431.1 Burning Out is an action a player must perform if they attempt to move one or more cards from their Main Deck to any other zone in excess of the number of cards remaining in their Main Deck:
