Is Royal Decree legal in Standard, Modern, and Commander?

Royal Decree is legal in: Legacy, Vintage, Commander.

Royal Decree

Q: What type of card is Royal Decree?

Royal Decree is an Enchantment. Its oracle text reads: "Cumulative upkeep {W} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)Whenever a Swamp, Mountain, black permanent, or red permanent becomes tapped, Royal Decree deals 1 damage to that permanent's controller."

Enchantment

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)<br>Whenever a Swamp, Mountain, black permanent, or red permanent becomes tapped, Royal Decree deals 1 damage to that permanent's controller.

Set Alliances

Rarity Rare

Artist Pete Venters