Positive Summon

Positive Summon is a new summon in Yu-Gi-Oh! BW. This is activated when you remove from play 2 or more monsters on your field. These monsters are held in the. When a Positive Monster is summoned that Positive monster has to have the sum of Stars that the monsters you used to summon it had. Monsters that add up to 13 or more is always level 12. The Positive Monster also always have the sum of the ATK and DEF of each monster. If the ATK or DEF or both reaches above 5000, then it is 5000.

Example
Take and  for example: It would form "Harpie Star Dragon."