Is Gargantuan Gorilla legal in Standard, Modern, and Commander?

Gargantuan Gorilla is legal in: Legacy, Vintage, Commander.

Gargantuan Gorilla

Q: What type of card is Gargantuan Gorilla?

Gargantuan Gorilla is a Creature — Ape. Its oracle text reads: "At the beginning of your upkeep, you may sacrifice a Forest. If you sacrifice a snow Forest this way, Gargantuan Gorilla gains trample until end of turn. If you don't sacrifice a Forest, sacrifice Gargantuan Gorilla and it deals 7 damage to you.{T}: Gargantuan Gorilla deals damage equal to its power to another target creature. That creature deals damage equal to its power to Gargantuan Gorilla."

Creature — Ape

At the beginning of your upkeep, you may sacrifice a Forest. If you sacrifice a snow Forest this way, Gargantuan Gorilla gains trample until end of turn. If you don't sacrifice a Forest, sacrifice Gargantuan Gorilla and it deals 7 damage to you.<br>: Gargantuan Gorilla deals damage equal to its power to another target creature. That creature deals damage equal to its power to Gargantuan Gorilla.