Is Sage of the Fang legal in Standard, Modern, and Commander?

Sage of the Fang is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Sage of the Fang?

Sage of the Fang is a Creature — Human Druid. Its oracle text reads: "When this creature enters, put a +1/+1 counter on target creature. Renew — {3}{G}, Exile this card from your graveyard: Put a +1/+1 counter on target creature, then double the number of +1/+1 counters on that creature. Activate only as a sorcery."

Sage of the Fang

Creature — Human Druid

$0.07 ↗20 similarCommander, Modern

When this creature enters, put a +1/+1 counter on target creature.

Renew — , Exile this card from your graveyard: Put a +1/+1 counter on target creature, then double the number of +1/+1 counters on that creature. Activate only as a sorcery.