Bog Tatters

Conditional evasion that lives or dies on a coin you cannot flip: against a Swamp deck, this is a 4/2 that simply cannot be stopped in the air or on the ground; against anyone else, it is a 4/2 with no relevant text. That all-or-nothing wager is the whole bargain of the landwalk family, and the Wraith is built to make the upside count when it lands. The 4/2 body is the point: power well ahead of toughness, because a creature that cannot be blocked has no use for survivability in combat and every use for clock speed. Black has historically been the home of swampwalk for the obvious mirror-tax reason, and the flavor follows: a wraith stalking through marshland that hides its own kind is a tidy match of mechanic to creature type. The fragility is real (2 toughness folds to nearly any burn or removal), but a swampwalker is rarely meant to trade in combat anyway; it is meant to connect, repeatedly, until the opponent finds an answer that does not involve a blocker. What keeps the design honest is the same thing that makes it a gamble: the ability checks the defending player's board, not yours, so its relevance is decided entirely by the opponent's mana base rather than anything you can guarantee.