Is Ajani Steadfast legal in Standard, Modern, and Commander?

Ajani Steadfast is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Ajani Steadfast

Q: What type of card is Ajani Steadfast?

Ajani Steadfast is a Legendary Planeswalker — Ajani. Its oracle text reads: "+1: Until end of turn, up to one target creature gets +1/+1 and gains first strike, vigilance, and lifelink.−2: Put a +1/+1 counter on each creature you control and a loyalty counter on each other planeswalker you control.−7: You get an emblem with "If a source would deal damage to you or a planeswalker you control, prevent all but 1 of that damage.""

Legendary Planeswalker — Ajani

+1: Until end of turn, up to one target creature gets +1/+1 and gains first strike, vigilance, and lifelink.<br>−2: Put a +1/+1 counter on each creature you control and a loyalty counter on each other planeswalker you control.<br>−7: You get an emblem with "If a source would deal damage to you or a planeswalker you control, prevent all but 1 of that damage."

Set Pioneer Masters

Rarity Mythic Rare

Artist Chris Rahn