Is Morphling legal in Standard, Modern, and Commander?

Morphling is legal in: Legacy, Vintage, Commander.

Morphling

Q: What type of card is Morphling?

Morphling is a Creature — Shapeshifter. Its oracle text reads: "{U}: Untap this creature. {U}: This creature gains flying until end of turn. {U}: This creature gains shroud until end of turn. (It can't be the target of spells or abilities.) {1}: This creature gets +1/-1 until end of turn. {1}: This creature gets -1/+1 until end of turn. Power/Toughness: 3/3"