If you lose control of your commander, lieutenant abilities of creatures you control will immediately stop applying. If this causes a creature’s toughness to become less than or equal to the amount of damage marked on it, the creature will be destroyed.
Tyrant's Familiar
Lieutenant abilities refer only to whether you control your commander, not any other player’s commander.
If a triggered ability granted by a lieutenant ability triggers, and in response to that trigger you lose control of your commander (causing the lieutenant to lose that ability), that triggered ability will still resolve.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Todd Lockwood
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
