Is Bold Defense legal in Standard, Modern, and Commander?

Bold Defense is legal in: Modern, Legacy, Vintage, Commander, Pauper.

Bold Defense

Q: What type of card is Bold Defense?

Bold Defense is an Instant. Its oracle text reads: "Kicker {3}{W} (You may pay an additional {3}{W} as you cast this spell.) Creatures you control get +1/+1 until end of turn. If this spell was kicked, instead creatures you control get +2/+2 and gain first strike until end of turn."

Instant

Kicker (You may pay an additional as you cast this spell.)

Creatures you control get +1/+1 until end of turn. If this spell was kicked, instead creatures you control get +2/+2 and gain first strike until end of turn.

Set Zendikar

Rarity Common

Mana Value 3

Artist Scott Chou

Collector # 3

Scryfall Gatherer