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 - $4.90
Lightly Played - $4.70
Moderately Played - $4.40
Heavily Played - $3.90
Damaged - $3.20
NM-Mint Non English - $4.90
Lightly Played Non English - $4.70
Moderately Played Non English - $4.40
Heavily Played Non English - $3.90
Damaged Non English - $3.20