Is Auntie's Snitch legal in Standard, Modern, and Commander?

Auntie's Snitch is legal in: Modern, Legacy, Vintage, Commander.

Auntie's Snitch

Q: What type of card is Auntie's Snitch?

Auntie's Snitch is a Creature — Goblin Rogue. Its oracle text reads: "This creature can't block. Prowl {1}{B} (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Goblin or Rogue.) Whenever a Goblin or Rogue you control deals combat damage to a player, if this card is in your graveyard, you may return this card to your hand."