Is Moonshadow legal in Standard, Modern, and Commander?

Moonshadow is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Moonshadow

Q: What type of card is Moonshadow?

Moonshadow is a Creature — Elemental. Its oracle text reads: "Menace This creature enters with six -1/-1 counters on it. Whenever one or more permanent cards are put into your graveyard from anywhere while this creature has a -1/-1 counter on it, remove a -1/-1 counter from this creature."

Creature — Elemental

$15.53 ↗20 similarCommander, Modern

Menace

This creature enters with six -1/-1 counters on it.

Whenever one or more permanent cards are put into your graveyard from anywhere while this creature has a -1/-1 counter on it, remove a -1/-1 counter from this creature.

Set Lorwyn Eclipsed

Rarity Mythic Rare

Mana Value 1

Artist Olivier Bernard

Collector # 110