Is Dizzy Spell legal in Standard, Modern, and Commander?

Dizzy Spell is legal in: Modern, Legacy, Vintage, Commander, Pauper.

Dizzy Spell

Q: What type of card is Dizzy Spell?

Dizzy Spell is an Instant. Its oracle text reads: "Target creature gets -3/-0 until end of turn. Transmute {1}{U}{U} ({1}{U}{U}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)"

Instant

Target creature gets -3/-0 until end of turn.

Transmute (, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)