Activated abilities of creatures you control cost X less to activate, where X is Agatha of the Vile Cauldron's power. This effect can't reduce the mana in that cost to less than one mana.
4RG: Other creatures you control get +1/+1 and gain trample and haste until end of turn.
NM-Mint - $0.90
Lightly Played - $0.90
Moderately Played - $0.90
Heavily Played - $0.80
Damaged - $0.60
NM-Mint Non English - $0.90
Lightly Played Non English - $0.90
Moderately Played Non English - $0.90
Heavily Played Non English - $0.80
Damaged Non English - $0.60
Foil Prices
NM-Mint Foil - $2.60
Lightly Played Foil - $2.40
Moderately Played Foil - $2.30
Heavily Played Foil - $2.10
Damaged Foil - $1.70
NM-Mint Foil Non English - $2.60
Lightly Played Foil Non English - $2.40
Moderately Played Foil Non English - $2.30
Heavily Played Foil Non English - $2.10
Damaged Foil Non English - $1.70