Is Candletrap legal in Standard, Modern, and Commander?

Candletrap is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Candletrap

Q: What type of card is Candletrap?

Candletrap is an Enchantment — Aura. Its oracle text reads: "Enchant creature Enchanted creature has defender. Prevent all combat damage that would be dealt by enchanted creature. Coven — {2}{W}, Sacrifice this Aura: Exile enchanted creature. Activate only if you control three or more creatures with different powers."