Whenever Karn, Silver Golem blocks or becomes blocked, it gets -4/+4 until end of turn. {1}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its converted mana cost until end of turn.
NM-Mint - $7.20
Lightly Played - $6.80
Moderately Played - $6.50
Heavily Played - $5.70
Damaged - $4.70
NM-Mint Non English - $7.20
Lightly Played Non English - $6.80
Moderately Played Non English - $6.50
Heavily Played Non English - $5.70
Damaged Non English - $4.70