Brimaz, King of Oreskos

Vigilance
Whenever Brimaz attacks, create a 1/1 white Cat Soldier creature token with vigilance that's attacking.
Whenever Brimaz blocks a creature, create a 1/1 white Cat Soldier creature token with vigilance that's blocking that creature.

Foundations Jumpstart

Vigilance
Whenever Brimaz, King of Oreskos attacks, create a 1/1 white Cat Soldier creature token with vigilance that's attacking.
Whenever Brimaz blocks a creature, create a 1/1 white Cat Soldier creature token with vigilance that's blocking that creature.

The List

Secret Lair Drop

Born of the Gods

Vigilance
Whenever Brimaz, King of Oreskos attacks, put a 1/1 white Cat Soldier creature token with vigilance onto the battlefield attacking.
Whenever Brimaz blocks a creature, put a 1/1 white Cat Soldier creature token with vigilance onto the battlefield blocking that creature.

Although the tokens enter the battlefield attacking or blocking, they were never declared as attacking or blocking creatures. Abilities that trigger whenever a creature attacks or blocks won't trigger.

For the first triggered ability, you declare which player, planeswalker, or battle the token is attacking as you put it onto the battlefield. It doesn't have to be the same player or planeswalker Brimaz is attacking.

If Brimaz somehow blocks two or more creatures (note it can't naturally do this), its last ability will trigger that many times.