Steadfast Paladin

Vanilla-with-a-keyword is one of the oldest common-rarity templates in white's kit: a body priced at the going rate, one evergreen ability, nothing to read twice. Two power for two mana with lifelink is the exact spot where lifelink stops being decoration and starts mattering, because a creature that attacks and blocks profitably turns each point of combat damage into a point of life, and a two-drop trades into most early threats without leaving you behind on the race. That is the whole design job: give a white aggressive or midrange curve a cheap creature that gains life incidentally, without a trigger to build around or a condition to satisfy. The Dwarf Knight typing is the only wrinkle, and it is a filing decision rather than a payoff: it slots the card into Knight-matters shells that occasionally reward the tribe. Beyond that, this is fixing for a curve, not an engine, and it was designed to be exactly that. The honest read is a clean, replaceable common that fills the two-slot when a deck wants lifegain stapled to a warm body rather than a spell that has to resolve to do anything.