Is Ral and the Implicit Maze legal in Standard, Modern, and Commander?

Ral and the Implicit Maze is legal in: Modern, Legacy, Vintage, Commander, Historic.

Ral and the Implicit Maze

Q: What type of card is Ral and the Implicit Maze?

Ral and the Implicit Maze is an Enchantment — Saga. Its oracle text reads: "(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — This Saga deals 2 damage to each creature and planeswalker your opponents control. II — You may discard a card. If you do, exile the top two cards of your library. You may play them until the end of your next turn. III — Create a Spellgorger Weird token. (It's a {2}{R} 2/2 Weird creature with "Whenever you cast a noncreature spell, put a +1/+1 counter on Spellgorger Weird.")"

Enchantment — Saga

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I — This Saga deals 2 damage to each creature and planeswalker your opponents control.

II — You may discard a card. If you do, exile the top two cards of your library. You may play them until the end of your next turn.

III — Create a Spellgorger Weird token. (It's a 2/2 Weird creature with "Whenever you cast a noncreature spell, put a +1/+1 counter on Spellgorger Weird.")