Is Ceta Disciple legal in Standard, Modern, and Commander?

Ceta Disciple is legal in: Legacy, Vintage, Commander, Pauper.

What type of card is Ceta Disciple?

Ceta Disciple is a Creature — Merfolk Wizard. Its oracle text reads: "{R}, {T}: Target creature gets +2/+0 until end of turn. {G}, {T}: Add one mana of any color. *"The sea holds all that you need. You simply must know how to ask for it."* Power/Toughness: 1/1"