Is Encroaching Dragonstorm legal in Standard, Modern, and Commander?

Encroaching Dragonstorm is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Encroaching Dragonstorm

Q: What type of card is Encroaching Dragonstorm?

Encroaching Dragonstorm is an Enchantment. Its oracle text reads: "When this enchantment enters, search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle. When a Dragon you control enters, return this enchantment to its owner's hand."