Is Omnath, Locus of All legal in Standard, Modern, and Commander?

Omnath, Locus of All is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Omnath, Locus of All

Q: What type of card is Omnath, Locus of All?

Omnath, Locus of All is a Legendary Creature — Phyrexian Elemental. Its oracle text reads: "If you would lose unspent mana, that mana becomes black instead. At the beginning of your first main phase, look at the top card of your library. You may reveal that card if it has three or more colored mana symbols in its mana cost. If you do, add three mana in any combination of its colors and put it into your hand. If you don't reveal it, put it into your hand. Power/Toughness: 4/4"

Legendary Creature — Phyrexian Elemental

If you would lose unspent mana, that mana becomes black instead.

At the beginning of your first main phase, look at the top card of your library. You may reveal that card if it has three or more colored mana symbols in its mana cost. If you do, add three mana in any combination of its colors and put it into your hand. If you don't reveal it, put it into your hand.

Power/Toughness: 4/4

Set March of the Machine

Rarity Rare

Mana Value 5

Artist Bryan Sola

Collector # 249

Scryfall