While Batterskull has long been the best friend of Stoneforge Mystic, the printing of Kaldra Compleat added an even deadlier threat to the Artificers toolbox
Then you also get to draw a card
Of course, in a Dungeons & Dragons set it makes sense to have some powerful cards that care about dragons
Not even extremely rare cards like Black Lotus are in this level, since there are a couple copies around the world
It featured in some of the earliest decks in the game, it was a pivotal piece of the Sligh deck which essentially acted as the foundation of the mono red aggro archetype, and its presence has been significant in Modern from the first day of the format as it has featured in many of the formats best decks from Zoo to Splinter Twin to Jund
Oh and couldn't find Jorn, God of Winter Flip or Svella, Ice Shaper just looking for 3 mana legendary green creatures, unless I add in 'legendary snow creatures' which makes it feel like I'm expected to know snow creatures before actually looking for them