Complete Trophies and unlock rewards for every ten achievements completed.

Reward	How to unlock
Cat's Bell (ring) Recipe	10 Trophies completed.
Domination Ring Recipe	50 Trophies completed.
Hero's Ring Recipe	30 Trophies completed.
Monarch's Ring Recipe	40 Trophies completed.
MP + 20%	20 Trophies completed.
Ring of Dominion Recipe	70 Trophies completed.
Ruler's Ring Recipe	60 Trophies completed.