Diligent Excavator

Cast an artifact, a legendary, or a Saga, and two cards peel off a library: repeatable, no extra mana, once per qualifying spell. That trigger is what turns a composition-matters payoff into a genuine mill engine, and the wording carries the weight. It fires on the cast rather than resolution, so a countered legendary still mills; it reads the type, not the cost, so the cheapest legendary trinket pings just as hard as a marquee bomb. Point the trigger at yourself and it becomes a steady self-mill clock for graveyard strategies that have always wanted this kind of low-cost, hands-off enabler from a two-drop. Point it across the table and it grinds an opponent's library down two at a time, slow but inevitable. The catch is that it only works as fast as your deck is stuffed with historic spells, and its 1/3 frame keeps it firmly in the support role: it blocks early and shrugs off a stray burn spell, but it contributes nothing to a board plan and asks you to build the deck that makes its trigger matter. This is an enabler for the archetype-committed, not a card that carries its own weight, and its value scales directly with how many artifacts and legends surround it.