Is Synth Eradicator legal in Standard, Modern, and Commander?

Synth Eradicator is legal in: Legacy, Vintage, Commander.

What type of card is Synth Eradicator?

Synth Eradicator is an Artifact Creature — Synth Soldier. Its oracle text reads: "Haste Whenever this creature attacks, exile the top card of your library. You may get {E}{E} (two energy counters). If you don't, you may play that card this turn. {T}, Pay {E}{E}{E}: This creature deals 3 damage to any target."

Synth Eradicator

Artifact Creature — Synth Soldier

Haste

Whenever this creature attacks, exile the top card of your library. You may get (two energy counters). If you don't, you may play that card this turn.