Hover Barrier

A flying wall is a quiet trick of the rules: defenders can't attack, but nothing stops them from blocking what comes from above, so this 0/6 patrols the air the way an ordinary wall patrols the ground. The result is a near-total roadblock against the small evasive creatures that aggressive blue and white decks lean on. Six toughness shrugs off most early fliers, and the flying keyword means it intercepts them rather than waving them through, the failure mode of a grounded wall against an air force. The body stalls things on both axes at once: it stands in front of a 4/4 on the dirt and a 2/2 in the clouds with equal indifference. What it cannot do is end a game, which is exactly the brief for a defensive blue creature priced this low; it buys turns for a deck planning to win by other means. As a piece of defensive design it sits in a long line of cheap blue walls built to survive long enough for the slower plan to come online, distinguished here by the choice to put the eyes in the sky.