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.
Near Mint - $1.25
Lightly Played - $1.25
Moderately Played - $1.00
Heavily Played - $0.75
Damaged - $0.75
Near Mint Non-English - $1.25
Lightly Played Non-English - $1.25
Moderately Played Non-English - $1.00
Heavily Played Non-English - $0.75
Damaged Non-English - $0.75
Foil Prices
Near Mint Foil - $1.25
Lightly Played Foil - $1.25
Moderately Played Foil - $1.00
Heavily Played Foil - $0.75
Damaged Foil - $0.75
Near Mint Foil Non-English - $1.25
Lightly Played Foil Non-English - $1.25
Moderately Played Foil Non-English - $1.00
Heavily Played Foil Non-English - $0.75
Damaged Foil Non-English - $0.75