Mystery Booster 2

Erhnam Djinn

At the beginning of your upkeep, target non-Wall creature an opponent controls gains forestwalk until your next upkeep.

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.)

Vintage Masters

Judgment

Beatdown Box Set

At the beginning of your upkeep, target non—
Wall creature an opponent controls gains forestwalk until your next upkeep. (The creature is unblockable as long as defending player controls a forest.)

Anthologies

Oversized League Prizes

Pro Tour Collector Set

Rinascimento

Chronicles

During your upkeep, target non-wall creature an opponent controls gains forestwalk until your next turn. Ignore this effect if there are no legal targets.

Chronicles Foreign Black Border

Arabian Nights

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.