Is Twiddle legal in Standard, Modern, and Commander?

Twiddle is legal in: Modern, Legacy, Vintage, Commander, Pauper.

What type of card is Twiddle?

Twiddle is an Instant. Its oracle text reads: "You may tap or untap target artifact, creature, or land."

Instant

You may tap or untap target artifact, creature, or land.

Set Limited Edition Alpha

Rarity Common

Artist Rob Alexander

Instant Modern Commander Pauper