Is Ambling Stormshell legal in Standard, Modern, and Commander?

Ambling Stormshell is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Ambling Stormshell

Q: What type of card is Ambling Stormshell?

Ambling Stormshell is a Creature — Turtle. Its oracle text reads: "Ward {2} Whenever this creature attacks, put three stun counters on it and draw three cards. (If a permanent with a stun counter would become untapped, remove one from it instead.) Whenever you cast a Turtle spell, untap this creature."

Creature — Turtle

$0.31 ↗20 similarCommander, Modern

Ward

Whenever this creature attacks, put three stun counters on it and draw three cards. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Whenever you cast a Turtle spell, untap this creature.

Set Tarkir: Dragonstorm

Rarity Rare

Mana Value 5

Artist Carlos Palma Cruchaga

Collector # 37