Security Blockade

Three mana for a 2/2 with vigilance is already a fair rate in white, which tells you the Aura half is along for free. That is the design logic: the token is the real payment, and the enchantment is a sweetener the card almost dares you to ignore. The damage-prevention shield reads worse than it plays in only one direction. It does nothing for a creature, nothing for planeswalkers, and turns off a single point per activation; what it actually buys is a slow valve against burn and reach in a long game, an extra tap-ability stapled to a land you already control. The cost of that valve is the steepest part: enchanting your own land does nothing to disrupt an opponent, so the Aura is pure self-improvement on a permanent type that rarely wants the attention. Read the whole package and the priorities sort themselves out. The Knight wants to attack; the land wants to sit back and chip away at incoming damage. Asking one card to push a clock and survive one feels like a contradiction the design never fully resolves, which is why this lands as a defensive value card wearing aggressive clothes: a body that comes down, blocks or trades, and leaves behind a land that quietly takes the edge off whatever the body could not stop.