Is Spellseeker legal in Standard, Modern, and Commander?

Spellseeker is legal in: Legacy, Vintage, Commander.

Spellseeker

Q: What type of card is Spellseeker?

Spellseeker is a Creature — Human Wizard. Its oracle text reads: "When this creature enters, you may search your library for an instant or sorcery card with mana value 2 or less, reveal it, put it into your hand, then shuffle. *Mages and warriors recruited from across Kylem display their skills at Valor's Reach.* Power/Toughness: 1/1"

Creature — Human Wizard

When this creature enters, you may search your library for an instant or sorcery card with mana value 2 or less, reveal it, put it into your hand, then shuffle.

*Mages and warriors recruited from across Kylem display their skills at Valor's Reach.*

Power/Toughness: 1/1

Set Commander Masters

Rarity Mythic Rare

Mana Value 3

Artist Igor Kieryluk

Collector # 120

Scryfall