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 mana value until end of turn.
Near Mint - $10.25
Lightly Played - $9.75
Moderately Played - $7.75
Heavily Played - $6.25
Damaged - $4.25
Near Mint Non-English - $10.25
Lightly Played Non-English - $9.75
Moderately Played Non-English - $7.75
Heavily Played Non-English - $6.25
Damaged Non-English - $4.25