Is Krark, the Thumbless legal in Standard, Modern, and Commander?

Krark, the Thumbless is legal in: Legacy, Vintage, Commander.

Krark, the Thumbless

Q: What type of card is Krark, the Thumbless?

Krark, the Thumbless is a Legendary Creature — Goblin Wizard. Its oracle text reads: "Whenever you cast an instant or sorcery spell, flip a coin. If you lose the flip, return that spell to its owner's hand. If you win the flip, copy that spell, and you may choose new targets for the copy. Partner (You can have two commanders if both have partner.) *"Double or nothing."* Power/Toughness: 2/2"

Legendary Creature — Goblin Wizard

Whenever you cast an instant or sorcery spell, flip a coin. If you lose the flip, return that spell to its owner's hand. If you win the flip, copy that spell, and you may choose new targets for the copy.

Partner (You can have two commanders if both have partner.)

*"Double or nothing."*

Power/Toughness: 2/2

Set Commander Legends

Rarity Rare

Mana Value 2

Artist Mathias Kollros

Collector # 189

Scryfall