Black Dragon

The Acid Breath trigger is doing the interesting work here, and it maps a familiar spell effect onto a body. A creature entering the battlefield and handing an opponent's creature -3/-3 is functionally a stapled removal instant grafted to a 4/4 flier: pay the seven and you get both halves in one card, which is the whole appeal of an enters-the-battlefield removal Dragon. The -3/-3 is temporary, so it kills small and midsized threats outright but only shrinks the big ones, meaning the trigger reads more as a tempo swing than a guaranteed answer to a top-end blocker. That distinction matters more than the raw stats suggest. The card slots cleanly into the long tradition of set-defining common and uncommon Dragons, where a flier with an evasive body and a built-in removal effect trades up on the turn it lands. It is not a card that rewards deckbuilding around it so much as one that pays you flat rate for including it: a hard-to-block clock and a piece of interaction, bundled. For players drawn to the Dungeons & Dragons flavor, it also functions as a straightforward reference to the black dragon's acid breath from the source material, translated into mechanics without any of the awkwardness those crossovers sometimes carry.