Karn, Silver Golem [From the Vault: Relics] Pioneer you may look at the

you may look at the top X cards of your library

instead forcing them to take on its form

The Battle of Tomakul taught Urza not to rely on fickle reinforcements

Set: Portal Three Kingdoms Type: Instant Rarity: Uncommon Cost: {W} Cast this spell only during the declare attackers step and only if you've been attacked this step

Set: Planar Chaos Type: Sorcery Rarity: Rare Cost: {2}{B}{B} Destroy all creatures

Karn, Silver Golem [From the Vault: Relics] Pioneer you may look at theSet: From the Vault: Relics Type: Legendary Artifact Creature Golem Rarity: Mythic 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.