Is Kav Landseeker legal in Standard, Modern, and Commander?

Kav Landseeker is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Kav Landseeker

Q: What type of card is Kav Landseeker?

Kav Landseeker is a Creature — Kavu Soldier. Its oracle text reads: "Menace (This creature can't be blocked except by two or more creatures.) When this creature enters, create a Lander token. At the beginning of the end step on your next turn, sacrifice that token. (It's an artifact with "{2}, {T}, Sacrifice this token: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.") Power/Toughness: 4/3"

Creature — Kavu Soldier

Menace (This creature can't be blocked except by two or more creatures.)

When this creature enters, create a Lander token. At the beginning of the end step on your next turn, sacrifice that token. (It's an artifact with ", , Sacrifice this token: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.")