Hall Monitor

A blocker-removal engine dressed up as a one-drop beater. The 1/1 with haste is a delivery mechanism; what matters is the repeatable "can't block this turn" ability, which turns any stalled board into a lane for your attackers. Effects that strip a single creature of blocking usually come stapled to a one-shot combat trick, spent once and gone. Here the same effect is an activated ability on a permanent, so every turn you keep two mana untapped you get to pick a defender and turn it off, either clearing a path for a lethal swing or forcing a blocker to sit useless while you race. That repeatability is what gives the card its ceiling: it is less a creature than a slow, board-warping falter you can point at whichever blocker is inconvenient. Haste matters more than it looks, since the creature can attack the turn it lands, then start opening the ground for the rest of the team the following turn. The cost is the friction: two mana and a tap for a single target is a real tempo tax when you would rather be developing, and the ability touches only blocking, not attacking, so it does nothing on defense. As an aggressive tool it rewards a wide board that already wants to push damage through; it is a payoff for committing attackers, not a card that generates advantage on its own.