Is Lost Days legal in Standard, Modern, and Commander?

Lost Days is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Lost Days

Q: What type of card is Lost Days?

Lost Days is an Instant — Lesson. Its oracle text reads: "The owner of target creature or enchantment puts it into their library second from the top or on the bottom. You create a Clue token. (It's an artifact with "{2}, Sacrifice this token: Draw a card.")"

Instant — Lesson

The owner of target creature or enchantment puts it into their library second from the top or on the bottom. You create a Clue token. (It's an artifact with ", Sacrifice this token: Draw a card.")