Is Obuun, Mul Daya Ancestor legal in Standard, Modern, and Commander?

Obuun, Mul Daya Ancestor is legal in: Legacy, Vintage, Commander.

Obuun, Mul Daya Ancestor

Q: What type of card is Obuun, Mul Daya Ancestor?

Obuun, Mul Daya Ancestor is a Legendary Creature — Elf Spirit. Its oracle text reads: "At the beginning of combat on your turn, up to one target land you control becomes an X/X Elemental creature with trample and haste until end of turn, where X is Obuun's power. It's still a land. Landfall — Whenever a land you control enters, put a +1/+1 counter on target creature. Power/Toughness: 3/3"

Legendary Creature — Elf Spirit

At the beginning of combat on your turn, up to one target land you control becomes an X/X Elemental creature with trample and haste until end of turn, where X is Obuun's power. It's still a land.

Landfall — Whenever a land you control enters, put a +1/+1 counter on target creature.

Power/Toughness: 3/3

Set Zendikar Rising Commander

Rarity Mythic Rare

Mana Value 4

Artist Chris Rallis

Collector # 2

Scryfall