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 - $5.30
Lightly Played - $5.00
Moderately Played - $4.80
Heavily Played - $4.20
Damaged - $3.50
NM-Mint Non English - $5.30
Lightly Played Non English - $5.00
Moderately Played Non English - $4.80
Heavily Played Non English - $4.20
Damaged Non English - $3.50