Undercity Informer

The activation cost here is the whole engine: one mana plus a creature to mill a player down to their first land, with no cap on how deep the dig goes. In a deck stocked with thin lands or none at all, that variance becomes a feature, because the fewer lands sit between the top and the next one, the more cards hit the graveyard per crank. That is the structural fingerprint of the dredge-and-self-mill builds this Rogue was meant to fuel: a sacrifice outlet that pays you in graveyard fuel rather than in damage or card draw, repeatable as long as you keep feeding it bodies. Pointed at an opponent, it reads as a clock that accelerates the more land-light their library runs, but the body that matters is your own, and the creatures you sacrifice are the resource you are converting. The 2/3 frame is almost incidental; this is a value piece whose job is to live long enough to be activated several times, turning expendable creatures into a one-mana, land-gated mill engine. It sits in the lineage of self-mill enablers that ask you to build around an empty graveyard becoming a full one, where the deckbuilding tax (running a manabase the engine can chew through quickly) is exactly what unlocks the payoff.