Seer of the Last Tomorrow
Mill as an engine has a recurring problem: the cards that fuel it are slow, fragile, and easy to outrace, so the better ones bolt the clock to a defensive body that survives the early turns. The 1/4 does exactly that, wide enough to eat the small attackers a tempo-light deck struggles against while it grinds. The activation cost is what makes the loop worth studying: tapping plus a mana plus discarding a card to mill three is a steep price to run turn after turn, and the discard is the pivot. Pitching a card into the cost is dead weight if you need the hand you're holding, but in a graveyard-fueled shell it becomes a second payoff, turning each activation into both fuel for the bin and a turn stripped off the opponent's library. The any-player targeting opens the rarely-used line of milling yourself for value rather than pointing it at an opponent's deck, though the default use is the latter. Throughput is the ceiling: three cards at a time, gated behind a tap and a real resource, means it never threatens to be the whole plan by itself. It is a recurring drip rather than a deluge, the kind of mill piece that wants a board around it to buy the turns its slow clock demands.

