Is Teferi, Time Raveler legal in Standard, Modern, and Commander?

Teferi, Time Raveler is legal in: Modern, Legacy, Vintage, Commander. It is banned in: Pioneer.

Teferi, Time Raveler

Q: What type of card is Teferi, Time Raveler?

Teferi, Time Raveler is a Legendary Planeswalker — Teferi. Its oracle text reads: "Each opponent can cast spells only any time they could cast a sorcery. +1: Until your next turn, you may cast sorcery spells as though they had flash. −3: Return up to one target artifact, creature, or enchantment to its owner's hand. Draw a card."