I Guess Garnet Gets Mega Rayquaza; Since Mega Rayquaza is the Balancer between Primal Groudon, and Primal Kyogre, while Garnet is the Stable Combination of Eternal Flame Ruby(due to her Heat and fire Powers along with firy temperment and hot-blooded intensity), and the Cold Cyclops Sapphire(since she has ONLY 1 EYE, and has Ice Powers)