While basic synthesis is straightforward, advanced techniques can lead to truly overpowered monsters. One key strategy is 'chain synthesis'. This involves synthesizing monsters multiple times, passing down specific Talents and accumulating '+ values'. For example, if you want a monster with a specific rare Talent, you might need to synthesize several generations of monsters, ensuring that Talent is inherited each time, until it reaches your desired ultimate monster. This requires careful planning and often involves 'sacrificing' powerful monsters to create even stronger offspring.
Another advanced technique is 'stat inheritance optimization'. When synthesizing, the offspring's base stats are influenced by the parents' stats. By leveling up parents to their maximum before synthesis, you can ensure the offspring starts with much higher base stats. Furthermore, some rare monsters can only be created through specific, non-obvious synthesis recipes. Always check online resources or the Monsterpedia's hints for these 'secret' recipes. Don't be afraid to experiment with different monster combinations; sometimes, unexpected results can lead to powerful discoveries.