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 - $7.10
NM-Mint Foil Non English - $7.10
Lightly Played Foil - $6.80
Lightly Played Foil Non English - $6.80
Moderately Played Foil - $6.40
Moderately Played Foil Non English - $6.40
Heavily Played Foil - $5.70
Heavily Played Foil Non English - $5.70
Damaged Foil - $4.60
Damaged Foil Non English - $4.60