Nighthaze

Evasion riders that replace themselves are an old reliable for black, and this is the genre at its most stripped down: pay a single black, hand a creature an unblockable-against-Swamps clause for the turn, refill the card you spent. The swampwalk grant is the part that dates the design and limits it, since landwalk turns on only when the defending player controls a land with the Swamp subtype: basics, sure, but also any of the dozens of nonbasics that carry the type, so a foe on dual lands or shocklands can still get walked over. The cantrip is what justifies the slot regardless of whether the evasion ever matters. In a mirror or any swamp-heavy field, you point it at an attacker and the creature simply walks through; against anyone off Swamps, you have paid one mana to cycle a sorcery and nudge a creature with a keyword that does nothing. That conditional-evasion-plus-draw shape is a deliberate floor-raiser, with one catch the worst case still demands: the card needs a legal creature target to cast at all, so it is not a free cantrip on an empty board the way a true draw spell would be. Give it a body, though, and the floor is a slow half-card draw while the ceiling is a hard-to-block alpha strike. It is low-variance filler that keeps a curve smooth without ever being the reason you won, built for an era when landwalk had real teeth and content to be a cantrip everywhere else.