Is Bjorna, Nightfall Alchemist legal in Standard, Modern, and Commander?

Bjorna, Nightfall Alchemist is legal in: Legacy, Vintage, Commander.

Bjorna, Nightfall Alchemist

Q: What type of card is Bjorna, Nightfall Alchemist?

Bjorna, Nightfall Alchemist is a Legendary Creature — Human. Its oracle text reads: "{T}, Sacrifice an artifact: Bjorna, Nightfall Alchemist deals 1 damage to target creature. Goad that creature. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.) Partner—Friends forever (You can have two commanders if both have this ability.)"

Legendary Creature — Human

, Sacrifice an artifact: Bjorna, Nightfall Alchemist deals 1 damage to target creature. Goad that creature. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)