Is Oath of Druids legal in Standard, Modern, and Commander?

Oath of Druids is legal in: Vintage, Commander. It is banned in: Legacy.

Oath of Druids

Q: What type of card is Oath of Druids?

Oath of Druids is an Enchantment. Its oracle text reads: "At the beginning of each player's upkeep, that player chooses target player who controls more creatures than they do and is their opponent. The first player may reveal cards from the top of their library until they reveal a creature card. If the first player does, that player puts that card onto the battlefield and all other cards revealed this way into their graveyard."

Enchantment

At the beginning of each player's upkeep, that player chooses target player who controls more creatures than they do and is their opponent. The first player may reveal cards from the top of their library until they reveal a creature card. If the first player does, that player puts that card onto the battlefield and all other cards revealed this way into their graveyard.

Set Commander 2016

Rarity Rare

Mana Value 2

Artist Daren Bader

Collector # 159

Scryfall Gatherer