Is Earth Kingdom General legal in Standard, Modern, and Commander?

Earth Kingdom General is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Earth Kingdom General

Q: What type of card is Earth Kingdom General?

Earth Kingdom General is a Creature — Human Soldier Ally. Its oracle text reads: "When this creature enters, earthbend 2. (Target land you control becomes a 0/0 creature with haste that's still a land. Put two +1/+1 counters on it. When it dies or is exiled, return it to the battlefield tapped.) Whenever you put one or more +1/+1 counters on a creature, you may gain that much life. Do this only once each turn."

Creature — Human Soldier Ally

$0.2320 similarCommander, Modern

When this creature enters, earthbend 2. (Target land you control becomes a 0/0 creature with haste that's still a land. Put two +1/+1 counters on it. When it dies or is exiled, return it to the battlefield tapped.)

Whenever you put one or more +1/+1 counters on a creature, you may gain that much life. Do this only once each turn.

Set Avatar: The Last Airbender

Rarity Uncommon

Mana Value 4

Artist Alexandr Leskinen

Collector # 173