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 Foil - $115.10
Lightly Played Foil - $109.40
Moderately Played Foil - $103.60
Heavily Played Foil - $92.10
Damaged Foil - $74.90
NM-Mint Foil Non English - $115.10
Lightly Played Foil Non English - $109.40
Moderately Played Foil Non English - $103.60
Heavily Played Foil Non English - $92.10
Damaged Foil Non English - $74.90