Is Wild Mammoth legal in Standard, Modern, and Commander?

Wild Mammoth is legal in: Legacy, Vintage, Commander.

Wild Mammoth

Q: What type of card is Wild Mammoth?

Wild Mammoth is a Creature — Elephant. Its oracle text reads: "At the beginning of your upkeep, if a player controls more creatures than each other player, the player who controls the most creatures gains control of this creature. *"Sit. Heel! Down! HELP!"* Power/Toughness: 3/4"

Creature — Elephant

At the beginning of your upkeep, if a player controls more creatures than each other player, the player who controls the most creatures gains control of this creature.

*"Sit. Heel! Down! HELP!"*

Power/Toughness: 3/4

Set Nemesis

Rarity Uncommon

Mana Value 3

Artist Bradley Williams

Collector # 124

Scryfall