name: Erhnam Djinn
originalText: During your upkeep, you must choose one of opponent's non-wall creatures in play. Until your next upkeep, that creature gains the forestwalk ability. If opponent has no creatures, ignore this effect.
printings: ARN, ATH, BCHR, BTD, CHR, JUD, MB2, OLEP, PTC, RIN, VMA
text: At the beginning of your upkeep, target non-Wall creature an opponent controls gains forestwalk until your next upkeep. (It can't be blocked as long as defending player controls a Forest.)