Is Master Pakku legal in Standard, Modern, and Commander?

Master Pakku is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Master Pakku

Q: What type of card is Master Pakku?

Master Pakku is a Legendary Creature — Human Advisor Ally. Its oracle text reads: "Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) Whenever Master Pakku becomes tapped, target player mills X cards, where X is the number of Lesson cards in your graveyard. (They put the top X cards of their library into their graveyard.)"

Legendary Creature — Human Advisor Ally

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Whenever Master Pakku becomes tapped, target player mills X cards, where X is the number of Lesson cards in your graveyard. (They put the top X cards of their library into their graveyard.)

Set Avatar: The Last Airbender

Rarity Uncommon

Mana Value 2

Artist Olena Richards

Collector # 63

Commander Mono-Blue Commanders ↗