Is Giant Tortoise legal in Standard, Modern, and Commander?

Giant Tortoise is legal in: Legacy, Vintage, Commander, Pauper.

What type of card is Giant Tortoise?

Giant Tortoise is a Creature — Turtle. Its oracle text reads: "Giant Tortoise gets +0/+3 as long as it's untapped."

Creature — Turtle

Giant Tortoise gets +0/+3 as long as it's untapped.

Set Arabian Nights

Rarity Common

Artist Kaja Foglio

Creature Commander Pauper Legacy