Is Shape of the Wiitigo legal in Standard, Modern, and Commander?

Shape of the Wiitigo is legal in: Modern, Legacy, Vintage, Commander.

Shape of the Wiitigo

Q: What type of card is Shape of the Wiitigo?

Shape of the Wiitigo is an Enchantment — Aura. Its oracle text reads: "Enchant creature When this Aura enters, put six +1/+1 counters on enchanted creature. At the beginning of your upkeep, put a +1/+1 counter on enchanted creature if it attacked or blocked since your last upkeep. Otherwise, remove a +1/+1 counter from it."

Enchantment — Aura

Enchant creature

When this Aura enters, put six +1/+1 counters on enchanted creature.

At the beginning of your upkeep, put a +1/+1 counter on enchanted creature if it attacked or blocked since your last upkeep. Otherwise, remove a +1/+1 counter from it.

Set Coldsnap

Rarity Rare

Mana Value 6

Artist Ron Spencer

Collector # 120

Scryfall