Is Flourishing Fox legal in Standard, Modern, and Commander?

Flourishing Fox is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Flourishing Fox?

Flourishing Fox is a Creature — Fox. Its oracle text reads: "Whenever you cycle another card, put a +1/+1 counter on this creature. Cycling {1} ({1}, Discard this card: Draw a card.) *"Day 1: These fox pups have really taken to me. "Day 4: Big. So big. Need additional security." —Jonald, mission naturalist, research notes* Power/Toughness: 1/1"