Is Ill-Timed Explosion legal in Standard, Modern, and Commander?

Ill-Timed Explosion is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Ill-Timed Explosion

Q: What type of card is Ill-Timed Explosion?

Ill-Timed Explosion is a Sorcery. Its oracle text reads: "Draw two cards. Then you may discard two cards. When you do, Ill-Timed Explosion deals X damage to each creature, where X is the greatest mana value among cards discarded this way."

Sorcery

Draw two cards. Then you may discard two cards. When you do, Ill-Timed Explosion deals X damage to each creature, where X is the greatest mana value among cards discarded this way.

Set Murders at Karlov Manor

Rarity Rare

Mana Value 4

Artist Aaron J. Riley

Collector # 207

Scryfall Gatherer