You may exert Gust Walker as it attacks. When you do, it gets +1/+1 and gains flying until end of turn. (An exerted creature won't untap during your next untap step.)
NM-Mint - $0.25
Lightly Played - $0.23
Moderately Played - $0.20
Heavily Played - $0.17
Damaged - $0.13
NM-Mint Non English - $0.25
Lightly Played Non English - $0.23
Moderately Played Non English - $0.20
Heavily Played Non English - $0.17
Damaged Non English - $0.13
Foil Prices
NM-Mint Foil - $0.25
Lightly Played Foil - $0.23
Moderately Played Foil - $0.20
Heavily Played Foil - $0.17
Damaged Foil - $0.13
NM-Mint Foil Non English - $0.25
Lightly Played Foil Non English - $0.23
Moderately Played Foil Non English - $0.20
Heavily Played Foil Non English - $0.17
Damaged Foil Non English - $0.13