Is Erhnam Djinn legal in Standard, Modern, and Commander?

Erhnam Djinn is legal in: Legacy, Vintage, Commander.

Erhnam Djinn

Q: What type of card is Erhnam Djinn?

Erhnam Djinn is a Creature — Djinn. Its oracle text reads: "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.)"

Creature — Djinn

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.)

Set Arabian Nights

Rarity Rare

Artist Ken Meyer, Jr.