Is Mavinda, Students' Advocate legal in Standard, Modern, and Commander?

Mavinda, Students' Advocate is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Mavinda, Students' Advocate?

Mavinda, Students' Advocate is a Legendary Creature — Bird Advisor. Its oracle text reads: "Flying {0}: You may cast target instant or sorcery card from your graveyard this turn. If that spell doesn't target a creature you control, it costs {8} more to cast this way. If that spell would be put into your graveyard, exile it instead. Activate only once each turn. (You still pay the spell's costs. Timing rules for the spell still apply.) Power/Toughness: 2/3"

Mavinda, Students' Advocate

Legendary Creature — Bird Advisor

Flying

: You may cast target instant or sorcery card from your graveyard this turn. If that spell doesn't target a creature you control, it costs more to cast this way. If that spell would be put into your graveyard, exile it instead. Activate only once each turn. (You still pay the spell's costs. Timing rules for the spell still apply.)