Alien Dice Hybrids
Actually, all of the hybrids tend to be improvements due to 'sentient evolution'. When you combine Littans, Sairah, or Kourwine in any form, they will ALWAYS produce children who are more healthy than their parents (although usually single births rather than multiple in the case of Littans). This is due to a specialized cell (that may have come from a common ancestor to all the humanoid races) that enables them to accept the bonding process to a dice so easily. The cell basically alters DNA when triggered. It disappears from the body once they reach puberty, only remaining in the reproductive organs to make changes and fixes when something odd shows up. They will not be activated unless there is a serious problem in the child.