Is Sandsteppe War Riders legal in Standard, Modern, and Commander?

Sandsteppe War Riders is legal in: Legacy, Vintage, Commander.

Sandsteppe War Riders

Q: What type of card is Sandsteppe War Riders?

Sandsteppe War Riders is a Creature — Human Warrior. Its oracle text reads: "Trample At the beginning of combat on your turn, bolster X, where X is the number of differently named artifact tokens you control. (Choose a creature with the least toughness among creatures you control and put X +1/+1 counters on it.) Power/Toughness: 4/4"

Creature — Human Warrior

Trample

At the beginning of combat on your turn, bolster X, where X is the number of differently named artifact tokens you control. (Choose a creature with the least toughness among creatures you control and put X +1/+1 counters on it.)

Power/Toughness: 4/4

Set March of the Machine Commander

Rarity Rare

Mana Value 4

Artist Kekai Kotaki

Collector # 39

Scryfall