The lord of Valencia who, in his craving for the power to protect his nation, sank himself into darkness. When the Fortress of Souls awoke, Soltar revealed himself once more, driving a steel chariot drawn by the souls he had captured. The teal glow coiling around the chariot is the souls of the people he offered in sacrifice.
If the timer runs out, Soltar uses Time Over: 2000% ATK true damage, 30 hits over 2s - effectively an unsurvivable wipe (true damage ignores DEF and RES). He also ramps as the fight drags: +25% ATK per countdown step (4 steps, +100% total), plus a permanent +10% ATK every time he casts a special skill. Treat the fight as a DPS race - kill him before he gets there. (Time limit per attempt: 15:00)
Reward quantities increase as you push Soltar's HP lower.