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 - $2
Lightly Played - $2
Moderately Played - $2
Heavily Played - $1
Damaged - $1
Near Mint Spanish - $2
Lightly Played Spanish - $2
Moderately Played Spanish - $2
Heavily Played Spanish - $1
Damaged Spanish - $1
Foil Prices
Near Mint Foil - $4
Lightly Played Foil - $3
Moderately Played Foil - $3
Heavily Played Foil - $2
Damaged Foil - $2
Near Mint Foil Spanish - $4
Lightly Played Foil Spanish - $3
Moderately Played Foil Spanish - $3
Heavily Played Foil Spanish - $2
Damaged Foil Spanish - $2