Karn, Silver Golem [Arena League 1999] Djinn he stopped calling it his

he stopped calling it his life's work

Exile Metallurgic Summonings: Return all instant and sorcery cards from your graveyard to your hand

Set: Judge Gift Cards 2014 Type: Artifact — Equipment Rarity: Rare Cost: {3} Equipped creature gets +2/+2 and has protection from black and from green

Then exile it

you may sacrifice an artifact

Karn, Silver Golem [Arena League 1999] Djinn he stopped calling it hisSet: Arena League 1999 Type: Legendary Artifact Creature Golem Rarity: Rare Cost: {5} 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.