Each player tracks their speed (or lack thereof) separately. Increasing your speed has no effect on whether another player has speed.
Hour of Victory
“Max speed — [ability]” means “As long as you have max speed, this object has [ability].” If the granted ability functions in a zone other than the battlefield, the max speed ability does too.
Your speed doesn’t change until a spell or ability says so, such as the inherent triggered ability that cares about opponents losing life during your turn. Notably, losing control of permanents with start your engines! doesn’t affect your speed.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Aaron Miller
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
