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 - $98.70
Lightly Played - $93.80
Moderately Played - $88.90
Heavily Played - $79.00
Damaged - $64.20
NM-Mint Non English - $98.70
Lightly Played Non English - $93.80
Moderately Played Non English - $88.90
Heavily Played Non English - $79.00
Damaged Non English - $64.20