Is Standard Bearer legal in Standard, Modern, and Commander?

Standard Bearer is legal in: Legacy, Vintage, Commander, Pauper.

Standard Bearer

Q: What type of card is Standard Bearer?

Standard Bearer is a Creature — Human Flagbearer. Its oracle text reads: "While an opponent is choosing targets as part of casting a spell they control or activating an ability they control, that player must choose at least one Flagbearer on the battlefield if able. *The standard was a rallying point for the army and a target for the enemy.* Power/Toughness: 1/1"

Creature — Human Flagbearer

While an opponent is choosing targets as part of casting a spell they control or activating an ability they control, that player must choose at least one Flagbearer on the battlefield if able.

*The standard was a rallying point for the army and a target for the enemy.*

Power/Toughness: 1/1

Set Apocalypse

Rarity Common

Mana Value 2

Artist Ron Spencer

Collector # 18

Scryfall