Is Earwig Squad legal in Standard, Modern, and Commander?

Earwig Squad is legal in: Modern, Legacy, Vintage, Commander.

Earwig Squad

Q: What type of card is Earwig Squad?

Earwig Squad is a Creature — Goblin Rogue. Its oracle text reads: "Prowl {2}{B} (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Goblin or Rogue.) When this creature enters, if its prowl cost was paid, search target opponent's library for three cards and exile them. Then that player shuffles."