Is Cocoon legal in Standard, Modern, and Commander?

Cocoon is legal in: Legacy, Vintage, Commander.

Cocoon

Q: What type of card is Cocoon?

Cocoon is an Enchantment — Aura. Its oracle text reads: "Enchant creature you controlWhen Cocoon enters, tap enchanted creature and put three pupa counters on Cocoon.Enchanted creature doesn't untap during your untap step if Cocoon has a pupa counter on it.At the beginning of your upkeep, remove a pupa counter from Cocoon. If you can't, sacrifice it, put a +1/+1 counter on enchanted creature, and that creature gains flying."

Enchantment — Aura

Enchant creature you control<br>When Cocoon enters, tap enchanted creature and put three pupa counters on Cocoon.<br>Enchanted creature doesn't untap during your untap step if Cocoon has a pupa counter on it.<br>At the beginning of your upkeep, remove a pupa counter from Cocoon. If you can't, sacrifice it, put a +1/+1 counter on enchanted creature, and that creature gains flying.

Set Legends

Rarity Uncommon

Artist Mark Tedin