Is Wear Away legal in Standard, Modern, and Commander?

Wear Away is legal in: Modern, Legacy, Vintage, Commander, Pauper.

What type of card is Wear Away?

Wear Away is an Instant — Arcane. Its oracle text reads: "Destroy target artifact or enchantment. Splice onto Arcane {3}{G} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)"

Wear Away

Instant — Arcane

Destroy target artifact or enchantment.

Splice onto Arcane (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)