Is Primal Adversary legal in Standard, Modern, and Commander?

Primal Adversary is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Primal Adversary

Q: What type of card is Primal Adversary?

Primal Adversary is a Creature — Wolf. Its oracle text reads: "Trample When this creature enters, you may pay {1}{G} any number of times. When you pay this cost one or more times, put that many +1/+1 counters on this creature, then up to that many target lands you control become 3/3 Wolf creatures with haste that are still lands. Power/Toughness: 4/3"

Creature — Wolf

Trample

When this creature enters, you may pay any number of times. When you pay this cost one or more times, put that many +1/+1 counters on this creature, then up to that many target lands you control become 3/3 Wolf creatures with haste that are still lands.