Is Aethertow legal in Standard, Modern, and Commander?

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

Aethertow

Q: What type of card is Aethertow?

Aethertow is an Instant. Its oracle text reads: "Put target attacking or blocking creature on top of its owner's library. Conspire (As you cast this spell, you may tap two untapped creatures you control that share a color with it. When you do, copy it and you may choose a new target for the copy.)"

Instant

Put target attacking or blocking creature on top of its owner's library.

Conspire (As you cast this spell, you may tap two untapped creatures you control that share a color with it. When you do, copy it and you may choose a new target for the copy.)

Set Modern Masters 2017

Rarity Common

Mana Value 4

Artist Warren Mahy

Collector # 205

Scryfall Gatherer