Kithkin Harbinger

One member of a color-by-creature-type Harbinger cycle, each pairing a small body with a tutor that stacks the next draw rather than refilling the hand. The trade is consistent across the cycle: a creature that does nothing to the board in exchange for arranging what comes next, and the 1/3 frame here is built to absorb a single ground attacker while the payoff queues up as your next card. The defining restriction is that the search positions the Kithkin as your following draw instead of handing it over immediately. You pay a turn of latency for the guarantee, and that delay is the cost that keeps a full-library tutor honest: the search finds anything you want, but you wait a turn to spend it, and the trigger fires only once when the creature enters, so the deck buys a single setup at three mana rather than a recurring engine. Because the search reaches the entire library, it never fails as long as one Kithkin remains, and the "Kithkin card" wording is broader than it looks, reaching any card carrying the type rather than creatures alone. That makes it connective tissue for a tribal shell: an early-curve body that, once it resolves, points the deck at whatever it most needs next, a lord, a finisher, or a piece of removal printed with the right type line.