Also, it's a reusable ability, giving it an advantage over a card like Culling the Weak
an opposing artifact deck could win the game by attacking for lethal, or your artifacts could be destroyed by a common board wipe aimed at creatures like Damnation
Most TCGs have multiple cards that encourage the player to pull additional cards during their turn, too, so it's not like Hiram Flaversham and Fortisphere are special in that regard
MTGA Codes, a retail website that collects unwanted and unused Arena codes and sells them directly online, regularly runs such giveaways to drive engagement on its Twitter account (@MTGA_CODES)
With Mana Leak they are forced to pay 50% more mana than you paid to cast the Leak
While this may sound difficult, Najeela, the Blade-Blossoms token-generating ability will give players access to exponentially more creatures each combat