Is Vexing Sphinx legal in Standard, Modern, and Commander?

Vexing Sphinx is legal in: Modern, Legacy, Vintage, Commander.

Vexing Sphinx

Q: What type of card is Vexing Sphinx?

Vexing Sphinx is a Creature — Sphinx. Its oracle text reads: "Flying Cumulative upkeep—Discard a card. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) When this creature dies, draw a card for each age counter on it."

Creature — Sphinx

Flying

Cumulative upkeep—Discard a card. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

When this creature dies, draw a card for each age counter on it.

Set Dominaria Remastered

Rarity Rare

Mana Value 3

Artist Lars Grant-West

Collector # 73

Scryfall Gatherer