Is Conclave Equenaut legal in Standard, Modern, and Commander?

Conclave Equenaut is legal in: Modern, Legacy, Vintage, Commander, Pauper.

What type of card is Conclave Equenaut?

Conclave Equenaut is a Creature — Human Soldier. Its oracle text reads: "Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Flying *Equenauts are the seeds of the Conclave, scattered on the four winds, searching for new places to take root.* Power/Toughness: 3/3"