Have a feeling Mind / Dex needs a 4point difference for it to evolve .
Any other id probably turn to Ravana
https://www.pso-world.com/sections.php?op=viewarticle&artid=1016
Sorry missed the Ra , but i do know If the MAG has 45 or higher DEF and is fed by a Force, it will aquire a special evolution based on the highest stat between POW, DEX, and MIND.