Is Glory-Bound Initiate legal in Standard, Modern, and Commander?

Glory-Bound Initiate is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Glory-Bound Initiate

Q: What type of card is Glory-Bound Initiate?

Glory-Bound Initiate is a Creature — Human Warrior. Its oracle text reads: "You may exert this creature as it attacks. When you do, it gets +1/+3 and gains lifelink until end of turn. (An exerted creature won't untap during your next untap step.)"

Creature — Human Warrior

$0.09 ↗6 similarCommander, Modern

You may exert this creature as it attacks. When you do, it gets +1/+3 and gains lifelink until end of turn. (An exerted creature won't untap during your next untap step.)

Set Amonkhet

Rarity Rare

Mana Value 2

Artist David Palumbo

Collector # 16