Karn, Silver Golem (8) [Arena League 1999] Rise of the Eldrazi Promos you may cast it without

you may cast it without paying its mana cost

Set: Magic 2011 Promos Type: Creature — Bird Rarity: rare Cost: {G} Flying {T}: Add one mana of any color

Set: The List Type: Creature — Elemental Shaman Rarity: uncommon Cost: {R} When this creature enters

Set: Friday Night Magic 2007 Type: Instant Rarity: rare Cost: {U} Counter target spell unless its controller pays {1}

Set: San Diego Comic-Con 2015 Type: Legendary Creature — Human Shaman Rarity: mythic

Karn, Silver Golem (8) [Arena League 1999] Rise of the Eldrazi Promos you may cast it withoutSet: Arena League 1999 Type: Legendary Artifact Creature Golem Rarity: rare Cost: {5} 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.