Flying
Whenever Guildpact Informant deals combat damage to a player or planeswalker, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
NM-Mint - $0.90
NM-Mint Non English - $0.90
Lightly Played - $0.90
Lightly Played Non English - $0.90
Moderately Played - $0.80
Moderately Played Non English - $0.80
Heavily Played - $0.70
Heavily Played Non English - $0.70
Damaged - $0.60
Damaged Non English - $0.60