Is Gorex, the Tombshell legal in Standard, Modern, and Commander?

Gorex, the Tombshell is legal in: Legacy, Vintage, Commander, Historic.

What type of card is Gorex, the Tombshell?

Gorex, the Tombshell is a Legendary Creature — Zombie Turtle. Its oracle text reads: "As an additional cost to cast this spell, you may exile any number of creature cards from your graveyard. This spell costs {2} less to cast for each card exiled this way. Deathtouch Whenever Gorex attacks or dies, choose a card at random exiled with Gorex and put that card into its owner's hand. Power/Toughness: 4/4"

Gorex, the Tombshell

Legendary Creature — Zombie Turtle

As an additional cost to cast this spell, you may exile any number of creature cards from your graveyard. This spell costs less to cast for each card exiled this way.