Smoke Bomb is a uncommon Artifact card from Magic: The Gathering (Assassin's Creed, ACR).
Uncommon
Assassin's Creed (ACR)
{3}
Mana Value
3
Card Text
Flash
All creatures have shroud. (They can't be the targets of spells or abilities.)
At the beginning of your upkeep, sacrifice this artifact. When you do, target creature you control can't be blocked this turn.