Is Clockwork Vorrac legal in Standard, Modern, and Commander?

Clockwork Vorrac is legal in: Modern, Legacy, Vintage, Commander.

Clockwork Vorrac

Q: What type of card is Clockwork Vorrac?

Clockwork Vorrac is an Artifact Creature — Boar Beast. Its oracle text reads: "Trample This creature enters with four +1/+1 counters on it. Whenever this creature attacks or blocks, remove a +1/+1 counter from it at end of combat. {T}: Put a +1/+1 counter on this creature."