Karn, Silver Golem is a rare Legendary Artifact Creature — Golem card from Magic: The Gathering (Commander's Arsenal Oversized, OCM1).
Rare
Commander's Arsenal Oversized (OCM1)
{5}
Power / Toughness
4 / 4
Mana Value
5
Card Text
Whenever Karn 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.
