Is Weight of Conscience legal in Standard, Modern, and Commander?

Weight of Conscience is legal in: Modern, Legacy, Vintage, Commander, Pauper.

Weight of Conscience

Q: What type of card is Weight of Conscience?

Weight of Conscience is an Enchantment — Aura. Its oracle text reads: "Enchant creature Enchanted creature can't attack. Tap two untapped creatures you control that share a creature type: Exile enchanted creature. *Sometimes the weight of the world on your shoulders is a literal one.*"