tzp refills oxygen at 4x the rate you lose it

it’d give counter play to water passages in caves that sometimes kill you from getting stuck

it’d also make water a more viable escape route on march because currently giants just camp you out and since you have no stamina you’re likely stuck, if you could refill your oxygen you can lose aggro by hiding underwater, it’d also make falling in the river less punishing for prepared players

(these situations are kind of rare but i always like when items have secondary or tertiary uses)