Is Kheru Spellsnatcher legal in Standard, Modern, and Commander?

Kheru Spellsnatcher is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Kheru Spellsnatcher

Q: What type of card is Kheru Spellsnatcher?

Kheru Spellsnatcher is a Creature — Snake Wizard. Its oracle text reads: "Morph {4}{U}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. You may cast that card without paying its mana cost for as long as it remains exiled."

Creature — Snake Wizard

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

When this creature is turned face up, counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. You may cast that card without paying its mana cost for as long as it remains exiled.

Set Duskmourn: House of Horror Commander

Rarity Rare

Mana Value 4

Artist Clint Cearley

Collector # 119

Scryfall Gatherer