Faster Play Between-Turn Action
In the optional faster-play rules, each player gets a personal supply of 5 tile-and-token pairs and plays only 15 main turns. After your turn, once play has passed to the next player, you may play 1 pair from your personal supply into your environment, once between each of your turns and 5 times in all. Pairs in the supply are never replaced, and unused ones can't be played after your last turn.
See also
Also answers
faster playfaster gamebetween turn actionbetween turns actionpersonal supplyextra action between turnsplay with 5 playersplay with 6 playersfive playerssix players