Is Instill Energy legal in Standard, Modern, and Commander?

Instill Energy is legal in: Legacy, Vintage, Commander.

Instill Energy

Q: What type of card is Instill Energy?

Instill Energy is an Enchantment — Aura. Its oracle text reads: "Enchant creatureEnchanted creature can attack as though it had haste.{0}: Untap enchanted creature. Activate only during your turn and only once each turn."

Enchantment — Aura

Enchant creature<br>Enchanted creature can attack as though it had haste.<br>: Untap enchanted creature. Activate only during your turn and only once each turn.