Is Storm Fleet Negotiator legal in Standard, Modern, and Commander?

Storm Fleet Negotiator is legal in: Legacy, Vintage, Commander.

Storm Fleet Negotiator

Q: What type of card is Storm Fleet Negotiator?

Storm Fleet Negotiator is a Creature — Siren Pirate. Its oracle text reads: "Flying Parley — Whenever this creature attacks, each player reveals the top card of their library. For each nonland card revealed this way, you create a Map token. Then each player draws a card. (A Map token is an artifact with "{1}, {T}, Sacrifice this token: Target creature you control explores. Activate only as a sorcery.")"

Creature — Siren Pirate

Flying

Parley — Whenever this creature attacks, each player reveals the top card of their library. For each nonland card revealed this way, you create a Map token. Then each player draws a card. (A Map token is an artifact with ", , Sacrifice this token: Target creature you control explores. Activate only as a sorcery.")