Hammerhead Shark

A "landwalk in reverse" experiment that reads like a typo until you parse it: most evasion creatures get better when the opponent plays a basic land type, while this one is conditionally grounded by the absence of Islands. The design is the old hosing-as-balance trick inverted. Where Islandwalk hands a creature unblockable evasion against blue decks, this Shark hands its controller a 2/3 body for two mana whose attacking clause is held hostage to the opponent's manabase. Against a non-blue board it is a wall that has forgotten how to move forward; against a blue mirror it swings freely. The body itself is unremarkable on purpose: the rate is generous precisely because the offense comes with a leash, and the leash tightens or loosens entirely outside its controller's hands. The era this comes from kept trying to make matchup-dependent stat lines a deckbuilding axis, betting that the metagame's color distribution would do the balancing the card's own text declined to do. The result is a creature that is half a blocker and half an aggressor, with the opponent deciding which half they get to fight.