Is Borderland Explorer legal in Standard, Modern, and Commander?

Borderland Explorer is legal in: Legacy, Vintage, Commander, Pauper.

Borderland Explorer

Q: What type of card is Borderland Explorer?

Borderland Explorer is a Creature — Elf Scout. Its oracle text reads: "When this creature enters, each player may discard a card. Each player who discarded a card this way may search their library for a basic land card, reveal it, put it into their hand, then shuffle."

Creature — Elf Scout

When this creature enters, each player may discard a card. Each player who discarded a card this way may search their library for a basic land card, reveal it, put it into their hand, then shuffle.

Set Commander 2018

Rarity Common

Mana Value 2

Artist Lucas Graciano

Collector # 133

Scryfall Gatherer