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

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

Conclave Phalanx

Q: What type of card is Conclave Phalanx?

Conclave Phalanx 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.) When this creature enters, you gain 1 life for each creature you control."