Is Old Man of the Sea legal in Standard, Modern, and Commander?

Old Man of the Sea is legal in: Legacy, Vintage, Commander.

Old Man of the Sea

Q: What type of card is Old Man of the Sea?

Old Man of the Sea is a Creature — Djinn. Its oracle text reads: "You may choose not to untap Old Man of the Sea during your untap step.{T}: Gain control of target creature with power less than or equal to Old Man of the Sea's power for as long as Old Man of the Sea remains tapped and that creature's power remains less than or equal to Old Man of the Sea's power."

Creature — Djinn

You may choose not to untap Old Man of the Sea during your untap step.<br>: Gain control of target creature with power less than or equal to Old Man of the Sea's power for as long as Old Man of the Sea remains tapped and that creature's power remains less than or equal to Old Man of the Sea's power.