Is Goblin Sappers legal in Standard, Modern, and Commander?

Goblin Sappers is legal in: Legacy, Vintage, Commander, Pauper.

Goblin Sappers

Q: What type of card is Goblin Sappers?

Goblin Sappers is a Creature — Goblin. Its oracle text reads: "{R}{R}, {T}: Target creature you control can't be blocked this turn. Destroy it and Goblin Sappers at end of combat.{R}{R}{R}{R}, {T}: Target creature you control can't be blocked this turn. Destroy it at end of combat."

Creature — Goblin

, : Target creature you control can't be blocked this turn. Destroy it and Goblin Sappers at end of combat.<br>, : Target creature you control can't be blocked this turn. Destroy it at end of combat.