Ajani, Strength of the Pride

Mana cost: {2}{W}{W}
Type: Legendary Planeswalker — Ajani
Loyalty: 5
Set: Core Set 2020 Promos #2p (mythic)
Price: $11.87 USD

+1: You gain life equal to the number of creatures you control plus the number of planeswalkers you control.
−2: Create a 2/2 white Cat Soldier creature token named Ajani's Pridemate with "Whenever you gain life, put a +1/+1 counter on this token."
0: If you have at least 15 life more than your starting life total, exile Ajani and each artifact and creature your opponents control.

Ajani, Strength of the Pride has 5 printings, first in Core Set 2020 (2019). EDHREC ranks it #3,066 among Commander cards. It appears most in Oloro, Ageless Ascetic decks (4,714 on EDHREC). 1 public deck on TCG runs it. It has 8 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: not legal
modern: legal
pioneer: legal
standard: not legal
brawl: legal

Public decks that run Ajani, Strength of the Pride

Angels: They're Just Like Us, but Cooler and with Wings - Secret Lair Drop, led by Bruna, the Fading Light

Commanders that run Ajani, Strength of the Pride most

Deck counts from EDHREC.

Oloro, Ageless Ascetic: 4,714 decks
Hope Estheim: 4,003 decks
Rin and Seri, Inseparable: 2,528 decks
Bilbo, Birthday Celebrant: 2,029 decks
Arahbo, Roar of the World: 1,831 decks
Karlov of the Ghost Council: 1,488 decks
Lathiel, the Bounteous Dawn: 1,405 decks
Ajani, Nacatl Pariah // Ajani, Nacatl Avenger: 1,372 decks

Often played with Ajani, Strength of the Pride

Cards that show up in the same decks on EDHREC.

Rulings

2019-07-12: If a planeswalker you control is also a creature (most likely because it's Gideon), it will be counted twice as Ajani's first ability resolves.
2019-07-12: The tokens created by Ajani's second ability are similar to the card Ajani's Pridemate, but they have no mana cost and their mana value is 0.
2019-07-12: In a Two-Headed Giant game, life gained by your teammate won't cause Ajani's Pridemate's ability to trigger, even though it will cause your team's life total to increase.
2019-07-12: The ability of Ajani's Pridemate triggers just once for each life-gaining event, whether it's 1 life from Impassioned Orator or 4 life from Dawning Angel. If you gain an amount of life "for each" of something or "equal to the number" of something, that life is gained as one event and the ability of Ajani's Pridemate triggers only once.
2019-07-12: In a Two-Headed Giant game, Ajani's last ability exiles permanents as long as your team's life total is greater than your team's starting life total by 15 or more life.
2019-07-12: Each creature with lifelink dealing combat damage causes a separate life-gaining event. For example, if two creatures you control with lifelink deal combat damage at the same time, Ajani's Pridemate's ability will trigger twice. However, if a single creature you control with lifelink deals combat damage to multiple creatures, players, and/or planeswalkers at the same time (perhaps because it has trample or was blocked by more than one creature), the ability will trigger only once.
2019-07-12: If Ajani's Pridemate is dealt lethal damage at the same time that you gain life, it won't receive a counter from its ability in time to save it.
2019-07-12: Whether you have at least 15 life more than your starting life total is determined as Ajani's last ability resolves.