Arctic Foxes

Most evasion keys off the attacker: flying, fear, shadow all describe something about the creature pushing through. This keys off the defender's manabase instead, letting a 1/1 slip past anything with power 2 or greater the moment the player across the table commits to snow. The body can still be chumped by a small enough blocker, so the evasion is partial by design, but it is the rare conditional that an opponent switches off by not building a certain way and switches on by accident in a mirror. The snow supertype was the connective tissue of its home set, woven through lands, spells, and creatures as a deckbuilding axis rather than a single mechanic, and the foxes are one of the clearest expressions of that idea: a card that does almost nothing in a vacuum and sharpens against a specific opposing commitment. The constraint cuts both ways, since even when the evasion is live the 1/1 is chipping rather than closing. The polarity is what makes it strange: a hate-bear works by taxing the opponent for playing snow, while this rewards you for the matchups where they already have, asking nothing of them and everything of the matchup. That conditionality is the entire card, and evasion that depends on the other deck's land choices is a lever almost no design has pulled since.