Is Exuberant Firestoker legal in Standard, Modern, and Commander?

Exuberant Firestoker is legal in: Modern, Legacy, Vintage, Commander.

Exuberant Firestoker

Q: What type of card is Exuberant Firestoker?

Exuberant Firestoker is a Creature — Human Druid Shaman. Its oracle text reads: "At the beginning of your end step, if you control a creature with power 5 or greater, you may have this creature deal 2 damage to target player or planeswalker. {T}: Add {C}."

Creature — Human Druid Shaman

At the beginning of your end step, if you control a creature with power 5 or greater, you may have this creature deal 2 damage to target player or planeswalker.

: Add .