Is Power Plant Worker legal in Standard, Modern, and Commander?

Power Plant Worker is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Power Plant Worker

Q: What type of card is Power Plant Worker?

Power Plant Worker is an Artifact Creature — Assembly-Worker. Its oracle text reads: "{3}: This creature gets +2/+2 until end of turn. If you control creatures named Mine Worker and Tower Worker, put two +1/+1 counters on this creature instead. Activate only once each turn. *Mechanical workers toiled away, tirelessly fueling the impossible.* Power/Toughness: 4/4"

Artifact Creature — Assembly-Worker

: This creature gets +2/+2 until end of turn. If you control creatures named Mine Worker and Tower Worker, put two +1/+1 counters on this creature instead. Activate only once each turn.