Is Flickerform legal in Standard, Modern, and Commander?

Flickerform is legal in: Modern, Legacy, Vintage, Commander.

Flickerform

Q: What type of card is Flickerform?

Flickerform is an Enchantment — Aura. Its oracle text reads: "Enchant creature {2}{W}{W}: Exile enchanted creature and all Auras attached to it. At the beginning of the next end step, return that card to the battlefield under its owner's control. If you do, return the other cards exiled this way to the battlefield under their owners' control attached to that creature."

Enchantment — Aura

Enchant creature

: Exile enchanted creature and all Auras attached to it. At the beginning of the next end step, return that card to the battlefield under its owner's control. If you do, return the other cards exiled this way to the battlefield under their owners' control attached to that creature.