Shorecomber Crab

A wall wearing a crab's shell. The 0/4 body for a single blue mana is the entire pitch: nothing else on the card, no keyword, no activated ability, just a body wide enough to soak up early aggression while a slower deck sets up. This is the sort of design that exists to teach the shape of a blocker, the idea that a creature with zero power still does a job by refusing to die to small attackers and standing between you and a fast clock. The lineage runs through decades of blue defensive walls that trade combat presence for survivability, and it strips that idea down to its cleanest form: no upside, no drawback, just four toughness holding a lane. It rewards patience because that is the only thing it does, and it asks nothing of the deck around it except time to spend. As a piece for newer players, it draws the line between what power does and what toughness does about as plainly as any creature can.