Shriekhorn

Three charge counters set the cadence, and the cadence is the design point: one mana up front buys three activations across three turns, six cards total spread out on a schedule rather than dumped at once. A graveyard-payoff deck wants that drip. The cards that reward a stocked bin usually need to do their work before the deck mills itself out, so a steady trickle feeds the threshold-style triggers that count how many cards are down there without overshooting the goal. The counters also cap the value at six and then leave the artifact spent, which is the restraint that keeps a repeatable one-mana engine from running away. Worth noting too is the targeting clause: it mills any target player, so the same artifact pulls double duty as self-mill fuel and as a slow grinding clock against an opponent's library when the deck is built to win by emptying it. A humble piece, but one built with unusual precision for a single job, and decks that treat the graveyard as a resource have leaned on its three-shot drip for years.