The Chaos Keeper enters with a sealed Magic booster pack of your choice under it. (You provide a new pack each time.) Whenever The Chaos Keeper deals combat damage to a player, reveal its cards and put one of them into your hand. (Don't open the booster pack until the first time this ability reolves.)
NM-Mint - $269.70
Lightly Played - $256.30
Moderately Played - $242.80
Heavily Played - $215.80
Damaged - $175.30
NM-Mint Non English - $269.70
Lightly Played Non English - $256.30
Moderately Played Non English - $242.80
Heavily Played Non English - $215.80
Damaged Non English - $175.30