Flying Whenever Aven Courier attacks, choose a counter on a permanent you control. Put a counter of that kind on target permanent you control if it doesn't have a counter of that kind on it.
NM-Mint - $2.00
Lightly Played - $1.90
Moderately Played - $1.80
Heavily Played - $1.60
Damaged - $1.30
NM-Mint Non English - $2.00
Lightly Played Non English - $1.90
Moderately Played Non English - $1.80
Heavily Played Non English - $1.60
Damaged Non English - $1.30