Is Sigil of Myrkul legal in Standard, Modern, and Commander?

Sigil of Myrkul is legal in: Legacy, Vintage, Commander.

Sigil of Myrkul

Q: What type of card is Sigil of Myrkul?

Sigil of Myrkul is an Enchantment. Its oracle text reads: "At the beginning of combat on your turn, mill a card. When you do, if there are four or more creature cards in your graveyard, put a +1/+1 counter on target creature you control and it gains deathtouch until end of turn. (To mill a card, put the top card of your library into your graveyard.)"

Enchantment

At the beginning of combat on your turn, mill a card. When you do, if there are four or more creature cards in your graveyard, put a +1/+1 counter on target creature you control and it gains deathtouch until end of turn. (To mill a card, put the top card of your library into your graveyard.)

Set Commander Legends: Battle for Baldur's Gate

Rarity Uncommon

Mana Value 3

Artist David Astruga

Collector # 147

Scryfall Gatherer