Is Realmbreaker, the Invasion Tree legal in Standard, Modern, and Commander?

Realmbreaker, the Invasion Tree is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Realmbreaker, the Invasion Tree

Q: What type of card is Realmbreaker, the Invasion Tree?

Realmbreaker, the Invasion Tree is a Legendary Artifact. Its oracle text reads: "{2}, {T}: Target opponent mills three cards. Put a land card from their graveyard onto the battlefield tapped under your control. It gains "If this land would leave the battlefield, exile it instead of putting it anywhere else." {10}, {T}, Sacrifice Realmbreaker: Search your library for any number of Praetor cards, put them onto the battlefield, then shuffle."

Legendary Artifact

, : Target opponent mills three cards. Put a land card from their graveyard onto the battlefield tapped under your control. It gains "If this land would leave the battlefield, exile it instead of putting it anywhere else."