Game of Thrones!<br /><br />The dagger that initiated the War of the Five Kings is the one used by Bran Stark's would-be assassin in Season 1. It's a Valyrian steel dagger with a dragonbone hilt, and it plays a significant role in the storyline.<br /><br />Here's a brief description:<br /><br />- Blade: Valyrian steel, slender, and pointed<br />- Hilt: Dragonbone, polished, and ornate<br />- Significance: The dagger was used by an unknown assailant to try and kill Bran Stark, leading to a chain of events that sparked the War of the Five Kings.<br /><br />The dagger's ownership and history are shrouded in mystery, adding to its intrigue. It's eventually revealed that the dagger was originally owned by Littlefinger, who lied about its ownership to incite conflict.<br /><br />Game of Thrones:<br /><br />1. "The Dagger of Destiny: A Game of Thrones Story"<br />2. "Beneath the Blade: Uncovering the Secrets of the Valyrian Dagger"<br />3. "A Knife in the Dark: The Dagger that Started a War"<br />4. "Forged in Deceit: The Tale of the Dragonbone Dagger"<br />5. "The Blade that Broke the Realm"<br />6. "Unsheathing the Truth: The Dagger's Role in the War of Five Kings"<br />7. "A Small Spark, A Great Flame: The Story of the Dagger"<br />8. "Dagger of the Seven Kingdoms"