Whenever a commander you control enters the battlefield or attacks, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Near Mint - $10.25
Lightly Played - $9.75
Moderately Played - $8.25
Heavily Played - $6.25
Damaged - $5.25
Near Mint Non-English - $10.25
Lightly Played Non-English - $9.75
Moderately Played Non-English - $8.25
Heavily Played Non-English - $6.25
Damaged Non-English - $5.25