I can't take the credit for this idea; someone else posted it in a thread with a ton of different ideas. This one is my favorite, though: [b]Sword of Crota[/b] -Sort of like a mix of Juggernaut and Oddball from Halo; the Sword of Crota spawns in the middle of the map, and the objective is to pick it up and score as many kills with it as possible. Bonus points for scoring kills with the Sword, or killing the Sword-bearer.