Is Harbinger of Spring legal in Standard, Modern, and Commander?

Harbinger of Spring is legal in: Modern, Legacy, Vintage, Commander, Pauper.

Harbinger of Spring

Q: What type of card is Harbinger of Spring?

Harbinger of Spring is a Creature — Spirit. Its oracle text reads: "Protection from non-Spirit creatures Soulshift 4 (When this creature dies, you may return target Spirit card with mana value 4 or less from your graveyard to your hand.) Power/Toughness: 2/1"