With ascend, a player who controls ten or more permanents gets the city's blessing and keeps it for the rest of the game.
The rule
Ascend is a keyword. If you control ten or more permanents while an ascend permanent is on the battlefield or an ascend spell resolves, you get the city's blessing (CR 702.131a to 702.131d).
The blessing is permanent: it stays for the rest of the game, even if you later control fewer than ten permanents or the ascend card leaves. Any number of players can have it at the same time.
In Life Counter
Give a player the city's blessing with one tap. It stays on their area for the rest of the game, as the rule says; only undo takes a wrong tap back.