Riddlesmith

The loot trigger here is built to convert artifact-deck velocity into card selection, and the framing matters more than the rate. Every artifact spell you cast offers a draw-then-discard, so a deck stuffed with cheap artifacts turns this into a filtering engine that runs all game without ever asking for extra mana. The optional clause is the load-bearing piece: you only draw if you're willing to discard, so the trigger never forces you to ditch a card you want to keep, and you can simply decline when your hand is fine. That permissiveness is what lets it slot into graveyard-fueled artifact shells without becoming a liability. The discard half is the real prize for any strategy that wants cards in the bin: artifacts with recursive or graveyard-relevant abilities, reanimation targets, flashback-style payoffs that would rather be discarded than drawn. The 2/1 frame is fragile, but the card was never meant to attack; it's a self-perpetuating engine on legs that earns its keep only once your deck is dense enough with artifacts to fire the trigger every turn, and it rewards a build that has somewhere productive to send the discards. In a low-curve artifact shell it stitches together draws, fixes clunky hands, and quietly feeds whatever payoff the graveyard cares about, all off triggers you were going to generate anyway.