Is The Weatherseed Treaty legal in Standard, Modern, and Commander?

The Weatherseed Treaty is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

The Weatherseed Treaty

Q: What type of card is The Weatherseed Treaty?

The Weatherseed Treaty is an Enchantment — Saga. Its oracle text reads: "Read ahead (Choose a chapter and start with that many lore counters. Add one after your draw step. Skipped chapters don't trigger. Sacrifice after III.) I — Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. II — Create a 1/1 green Saproling creature token. III — Domain — Target creature you control gets +X/+X and gains trample until end of turn, where X is the number of basic land types among lands you control."

Enchantment — Saga

Read ahead (Choose a chapter and start with that many lore counters. Add one after your draw step. Skipped chapters don't trigger. Sacrifice after III.)

I — Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

II — Create a 1/1 green Saproling creature token.

III — Domain — Target creature you control gets +X/+X and gains trample until end of turn, where X is the number of basic land types among lands you control.

Set Dominaria United

Rarity Uncommon

Mana Value 3

Artist Livia Prima

Collector # 188

Scryfall Gatherer