When Tezzeret's Gatebreaker enters the battlefield, look at the top five cards of your library. You may reveal a blue or artifact card among them and put it into your hand. Put the rest on the bottom of your library in a random order.
,, Sacrifice Tezzeret's Gatebreaker: Creatures you control can't be blocked this turn.

Available only in Planeswalker Decks and not in Core 2019 booster packs.