Is A-Oran-Rief Ooze legal in Standard, Modern, and Commander?

A-Oran-Rief Ooze is legal in: Historic.

A-Oran-Rief Ooze

Q: What type of card is A-Oran-Rief Ooze?

A-Oran-Rief Ooze is a Creature — Ooze. Its oracle text reads: "When Oran-Rief Ooze enters, put a +1/+1 counter on target creature you control. Whenever Oran-Rief Ooze attacks, put a +1/+1 counter on each creature you control with a +1/+1 counter on it. Power/Toughness: 2/2"