Excavated Wall

A one-mana 0/4 that turns idle mana into self-mill is a strangely specific tool: it does not block to stall, it blocks to buy time while feeding a graveyard. The defender body is the reason the price is so low, and the repeatable , mill is the reason a graveyard deck wants it on the battlefield doing work over several turns. Where a burst enabler like Stitcher's Supplier front-loads its mill on entry and death, this one meters cards out one at a time across turns, which changes the strategic axis: you are not dumping the library at once, you are dialing in exactly how many cards you want in the yard and when. That granularity matters to a delve or flashback or reanimator plan that can overshoot by pitching too much at once. Being an artifact rather than a raw creature widens the pool of decks that can slot it and the effects that can bring it back or sacrifice it for value. The 0/4 frame is durable enough to survive the early turns it wants to spend milling, so it doubles as a wall against the fast starts a graveyard deck is most vulnerable to. Nothing flashy, but a cheap resilient blocker and a controllable mill engine printed on the same permanent is a cleaner package than the parts suggest.