Crashing Drawbridge

Haste enablers usually come stapled to a body that wants to attack, which is exactly the tension this Wall sidesteps. A 0/4 with Defender is never swinging, so the design puts all of its rate into the tap ability: everything you deploy this turn can attack, and the granting effect costs nothing beyond tapping the Wall itself. That makes it a repeatable, colorless haste source wearing a defensive frame, a combination older enablers rarely offered. The job is to shrink the gap between a threat arriving and a threat mattering, whether that is a fresh reanimation target, a token swarm dumped from hand, or a combo creature that would otherwise sit vulnerable to a sweeper for a full rotation. The 0/4 body is the payment: it blocks early, survives most incidental damage, and never asks to be replaced, so it can sit on the battlefield turn after turn as pure enabler rather than a card you regret drawing off the top. It is quiet, but it is the rare piece that solves summoning sickness without demanding a color commitment or a real attacker in exchange.