Then in your upkeep you make two tokens
Leonardo also covers flavor in a different way, much like some other commanders like Jenson Carthalion or General Tazri
You can do it by keeping a die with that result on Centaur of Attention, or just by writing down the result
While some might assume that Breena is a Group Hug commander due to providing card draw to the entire table, she is far from it: yes, your opponents can draw cards off her too, but in exchange you get +1/+1 counters and they had to attack your opponents in the process -- so you will be the one benefitting the most at all times
Not a booster box, but important: Commander decks Commander precon decks are not booster boxes, but they may be the best MTG product for many new casual players
If a permanent ever has both +1/+1 counters and -1/-1 counters on it at the same time, they're removed in pairs as a state-based action so that the permanent has only one of those kinds of counters on it