Ajani, Strength of the Pride — ruling 1

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.

Ajani, Strength of the Pride — ruling 2

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.

Ajani, Strength of the Pride — ruling 3

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.

Ajani, Strength of the Pride — ruling 4

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.

Ajani, Strength of the Pride — ruling 5

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.

Ajani, Strength of the Pride — ruling 6

Whether you have at least 15 life more than your starting life total is determined as Ajani's last ability resolves.

Ajani, Strength of the Pride — ruling 7

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.

Ajani, Strength of the Pride — ruling 8

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.

Ajani, Strength of the Pride : règles, fonctionnement et interactions (MTG)

Ajani, Strength of the Pride is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

+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.

How it works : Ajani, Strength of the Pride

Original English text — Wizards of the Coast / Scryfall

#1July 12, 2019· Wizards of the Coast
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.
No other card is named in this ruling.
#2July 12, 2019· Wizards of the Coast
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.
Card named in this ruling
Ajani's Pridemate
#3July 12, 2019· Wizards of the Coast
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.
Card named in this ruling
Ajani's Pridemate
#4July 12, 2019· Wizards of the Coast
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.
Card named in this ruling
Ajani's Pridemate
#5July 12, 2019· Wizards of the Coast
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.
Card named in this ruling
Ajani's Pridemate
#6July 12, 2019· Wizards of the Coast
Whether you have at least 15 life more than your starting life total is determined as Ajani's last ability resolves.
No other card is named in this ruling.
#7July 12, 2019· Wizards of the Coast
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.
Card named in this ruling
Ajani's Pridemate
#8July 12, 2019· Wizards of the Coast
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.
No other card is named in this ruling.