Is Quest for the Necropolis legal in Standard, Modern, and Commander?

Quest for the Necropolis is legal in: Modern, Legacy, Vintage, Commander, Historic.

Quest for the Necropolis

Q: What type of card is Quest for the Necropolis?

Quest for the Necropolis is an Enchantment. Its oracle text reads: "Landfall — Whenever a land you control enters, put a quest counter on this enchantment. {5}{B}, Sacrifice this enchantment: Put target creature card from a graveyard onto the battlefield under your control. This ability costs {1} less to activate for each quest counter on this enchantment. Activate only as a sorcery."

Enchantment

Landfall — Whenever a land you control enters, put a quest counter on this enchantment.

, Sacrifice this enchantment: Put target creature card from a graveyard onto the battlefield under your control. This ability costs less to activate for each quest counter on this enchantment. Activate only as a sorcery.