Is Dark Supplicant legal in Standard, Modern, and Commander?

Dark Supplicant is legal in: Legacy, Vintage, Commander, Historic.

Dark Supplicant

Q: What type of card is Dark Supplicant?

Dark Supplicant is a Creature — Human Cleric. Its oracle text reads: "{T}, Sacrifice three Clerics: Search your graveyard, hand, and/or library for a card named Scion of Darkness and put it onto the battlefield. If you search your library this way, shuffle."

Creature — Human Cleric

, Sacrifice three Clerics: Search your graveyard, hand, and/or library for a card named Scion of Darkness and put it onto the battlefield. If you search your library this way, shuffle.