Inventor's Apprentice

Strip the artifact requirement and a 2/3 for one red mana is a stat line aggressive decks would happily register; attach the +1/+1 to that condition, and the body turns into a deckbuilding contract. You agree to run enough artifacts that the bonus is live on turn one, and in exchange red gets a clock it does not otherwise have at that price. The toughness is the part doing quiet work: even with no artifact in play, a 1/2 shrugs off the pings and one-power blockers that would erase a true 1/1, so the floor never collapses to nothing. That asymmetry (a real downside that still leaves you a functional creature) keeps the card off the all-or-nothing conditional aggressors that punish a wrong opening hand. The design descends from red-affinity aggro going back to the first artifact-matters era, the same impulse behind creatures that reward a board full of metalcraft and improvise enablers. Everything lives in the tension between rate and commitment: cheap and aggressive if your list earns it, a sub-rate one-power one-drop if it does not.