Is Chained to the Rocks legal in Standard, Modern, and Commander?

Chained to the Rocks is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Chained to the Rocks

Q: What type of card is Chained to the Rocks?

Chained to the Rocks is an Enchantment — Aura. Its oracle text reads: "Enchant Mountain you controlWhen Chained to the Rocks enters, exile target creature an opponent controls until Chained to the Rocks leaves the battlefield. (That creature returns under its owner's control.)"

Enchantment — Aura

Enchant Mountain you control<br>When Chained to the Rocks enters, exile target creature an opponent controls until Chained to the Rocks leaves the battlefield. (That creature returns under its owner's control.)

Set Pioneer Masters

Rarity Rare

Artist Domenico Cava