Is Celestial Archon legal in Standard, Modern, and Commander?

Celestial Archon is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Celestial Archon

Q: What type of card is Celestial Archon?

Celestial Archon is an Enchantment Creature — Archon. Its oracle text reads: "Bestow {5}{W}{W} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)Flying, first strikeEnchanted creature gets +4/+4 and has flying and first strike."

Enchantment Creature — Archon

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)<br>Flying, first strike<br>Enchanted creature gets +4/+4 and has flying and first strike.