Is Boros Keyrune legal in Standard, Modern, and Commander?

Boros Keyrune is legal in: Modern, Pioneer, Legacy, Vintage, Commander.

Boros Keyrune

Q: What type of card is Boros Keyrune?

Boros Keyrune is an Artifact. Its oracle text reads: "{T}: Add {R} or {W}. {R}{W}: This artifact becomes a 1/1 red and white Soldier artifact creature with double strike until end of turn. (It deals both first-strike and regular combat damage.)"

Artifact

: Add or .

: This artifact becomes a 1/1 red and white Soldier artifact creature with double strike until end of turn. (It deals both first-strike and regular combat damage.)

Set Gatecrash

Rarity Uncommon

Mana Value 3

Artist Daniel Ljunggren

Collector # 227

Scryfall Gatherer