You and target player exchange control of the creature you each control with the highest mana value. Then exchange control of artifacts the same way. If two or more permanents a player controls are tied for highest, their controller chooses one of them.
Near Mint - £12.00
Lightly Played - £10.20
Moderately Played - £8.40
Heavily Played - £6.00
Damaged - £3.60
Near Mint Non English - £12.00
Lightly Played Non English - £10.20
Moderately Played Non English - £8.40
Heavily Played Non English - £6.00
Damaged Non English - £3.60