Is Proclamation of Rebirth legal in Standard, Modern, and Commander?

Proclamation of Rebirth is legal in: Modern, Legacy, Vintage, Commander.

What type of card is Proclamation of Rebirth?

Proclamation of Rebirth is a Sorcery. Its oracle text reads: "Return up to three target creature cards with mana value 1 or less from your graveyard to the battlefield. Forecast — {5}{W}, Reveal this card from your hand: Return target creature card with mana value 1 or less from your graveyard to the battlefield. (Activate only during your upkeep and only once each turn.)"

Proclamation of Rebirth

Sorcery

Return up to three target creature cards with mana value 1 or less from your graveyard to the battlefield.

Forecast — , Reveal this card from your hand: Return target creature card with mana value 1 or less from your graveyard to the battlefield. (Activate only during your upkeep and only once each turn.)