History of Token Limit

Token Limit is a feat (optional modifier chosen before the run) in The Desert Perpetual Raid. Destinypedia describes it as limiting the whole fireteam to a total of 3 revives, instead of each member having their own revive token.

Triumph

Completing all encounters of the raid with Token Limit active completes its feat triumph, which (per Kyber's Corner) greatly increases the initial chance for Whirling Ovation to drop. It is one of the feat triumphs listed under the Atemporal seal.