Is Morinfen legal in Standard, Modern, and Commander?

Morinfen is legal in: Legacy, Vintage, Commander.

Morinfen

Q: What type of card is Morinfen?

Morinfen is a Legendary Creature — Phyrexian Horror. Its oracle text reads: "Flying Cumulative upkeep—Pay 1 life. (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.)"

Legendary Creature — Phyrexian Horror

Flying

Cumulative upkeep—Pay 1 life. (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.)

Set Weatherlight

Rarity Rare

Mana Value 5

Artist Carl Critchlow

Collector # 75

Scryfall Gatherer