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: Legends Type: Creature — Manticore Rarity: rare Cost: {2}{R}{R} Flying {R}

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

At the beginning of your first main phase

Set: Secret Lair Drop Type: Creature — Giant Rarity: mythic Cost: {4}{B}{B} Deathtouch Whenever this creature enters or attacks

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.