Is Goliath Daydreamer legal in Standard, Modern, and Commander?

Goliath Daydreamer is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Goliath Daydreamer

Q: What type of card is Goliath Daydreamer?

Goliath Daydreamer is a Creature — Giant Wizard. Its oracle text reads: "Whenever you cast an instant or sorcery spell from your hand, exile that card with a dream counter on it instead of putting it into your graveyard as it resolves. Whenever this creature attacks, you may cast a spell from among cards you own in exile with dream counters on them without paying its mana cost."

Creature — Giant Wizard

$0.32 ↗6 similarCommander, Modern

Whenever you cast an instant or sorcery spell from your hand, exile that card with a dream counter on it instead of putting it into your graveyard as it resolves.

Whenever this creature attacks, you may cast a spell from among cards you own in exile with dream counters on them without paying its mana cost.

Set Lorwyn Eclipsed

Rarity Rare

Mana Value 4

Artist Omar Rayyan

Collector # 143