Is Zebra Unicorn legal in Standard, Modern, and Commander?

Zebra Unicorn is legal in: Legacy, Vintage, Commander.

What type of card is Zebra Unicorn?

Zebra Unicorn is a Creature — Unicorn. Its oracle text reads: "Whenever Zebra Unicorn deals damage, you gain that much life."

Creature — Unicorn

Whenever Zebra Unicorn deals damage, you gain that much life.

Set Mirage

Rarity Uncommon

Artist Margaret Organ-Kean

Creature Commander Legacy Vintage