Is Cavalier of Thorns legal in Standard, Modern, and Commander?

Cavalier of Thorns is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Cavalier of Thorns

Q: What type of card is Cavalier of Thorns?

Cavalier of Thorns is a Creature — Elemental Knight. Its oracle text reads: "Reach When this creature enters, reveal the top five cards of your library. Put a land card from among them onto the battlefield and the rest into your graveyard. When this creature dies, you may exile it. If you do, put another target card from your graveyard on top of your library."

Creature — Elemental Knight

$0.30 ↗20 similarCommander, Modern

Reach

When this creature enters, reveal the top five cards of your library. Put a land card from among them onto the battlefield and the rest into your graveyard.

When this creature dies, you may exile it. If you do, put another target card from your graveyard on top of your library.

Set Lorwyn Eclipsed Commander

Rarity Mythic Rare

Mana Value 5

Artist Jehan Choo

Collector # 100