Vault Breaker is a Mage minion card (rarity: common) that belongs to the "The Lost City of Un'Goro" set, which was released on 08.07.2025 and is one of initially 145 cards. The artist of this card was Timur Shevtsov, who also made 42 other artworks for Hearthstone.
The card costs 3 mana, has 2 attack and 4 health, and its card text reads: "After you Discover a card, reduce its Cost by (1)."
The flavor text of the card is the following: I've already told him 3 times to PUSH.
Based on 9 quiz answers, the card is moderately hard to memorize: 78% of them were correct.