Scott Pilgrim World

0: Whenever one of your creatures destroys another creature. Put an artifact onto the battlefield that has "sacrifice to get one mana of any color"
0: Caos: Put a 2/2 evil EX onto the battlefield fighting target human you control chosen at random. Then exile the evil EX.
0: When you plainswalk away from Scott Pilgrim World, each player gains control of all creatures they own.