Assassin Den

A Wall that funnels mana into someone else's swing is a familiar joke, but the specifics matter more than the punchline. The 2/4 body stalls the ground while the activated ability quietly assembles a threat somewhere else on the board: a permanent +1/+1 counter plus true unblockability, stacked on a single creature turn after turn. That pairing is the design axis. The unblockable clause means no chump can ever intercept the chosen attacker, so damage is guaranteed the moment it swings; the counter simply raises how much guaranteed damage lands, and because it accumulates while the unblockability resets each turn, the clock only ever accelerates. The sorcery-speed restriction is what keeps the loop fair. You cannot flash in the pump as a combat trick or push through mid-attack; the growth has to be declared on your own turn, in the open, before blockers are even relevant. That timing pins the card to a proactive, precombat plan rather than a reactive one, which is right for a creature that cannot attack and instead invests in someone else's connection. The four-mana redeploy cost reads as a payoff you build toward, not an engine that runs for free every turn. What it wants, structurally, is a durable defensive shell and one creature worth feeding repeatedly: an engine that rewards patience over tempo, closing games by making a single attacker inevitable rather than by ever breaking the stall it is content to sit behind.