Is Ravenloft Adventurer legal in Standard, Modern, and Commander?

Ravenloft Adventurer is legal in: Legacy, Vintage, Commander.

Ravenloft Adventurer

Q: What type of card is Ravenloft Adventurer?

Ravenloft Adventurer is a Creature — Human Rogue Assassin. Its oracle text reads: "When this creature enters, you take the initiative. If a creature an opponent controls would die, instead exile it and put a hit counter on it. Whenever this creature attacks, if you've completed a dungeon, defending player loses 1 life for each card they own in exile with a hit counter on it. Power/Toughness: 3/4"

Creature — Human Rogue Assassin

When this creature enters, you take the initiative.

If a creature an opponent controls would die, instead exile it and put a hit counter on it.

Whenever this creature attacks, if you've completed a dungeon, defending player loses 1 life for each card they own in exile with a hit counter on it.

Power/Toughness: 3/4

Set Commander Legends: Battle for Baldur's Gate

Rarity Rare

Mana Value 4

Artist Jodie Muir

Collector # 142

Scryfall