Is Mahadi, Emporium Master legal in Standard, Modern, and Commander?

Mahadi, Emporium Master is legal in: Legacy, Vintage, Commander.

What type of card is Mahadi, Emporium Master?

Mahadi, Emporium Master is a Legendary Creature — Devil. Its oracle text reads: "At the beginning of your end step, create a Treasure token for each creature that died this turn. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.") *"Welcome to the Wandering Emporium. Feel free to browse the bazaar. We have everything a lost soul could want, need, or afford."* Power/Toughness: 3/3"

Mahadi, Emporium Master

Legendary Creature — Devil

At the beginning of your end step, create a Treasure token for each creature that died this turn. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")