Quest: Using Crystal Ball (Q-18)
Guide: 30. Side Quests 18, 19 (Optional)
Recommended Level: 40
Location: Valrika's Laboratory
You'll have to complete "Bernard's Laboratory" first before you can activate this quest. Teleport to "Valrika's Laboratory -> Laboratory - Hall", then talk to Zinikr.
Next, teleport to "Hidden Valley -> Bernard's Laboratory" and walk toward the table in the middle to trigger a scene.

Teleport to "Chaos Fields -> Chaos Lakes".
Here you'll have to collect 5 "Chaos Material", 4 of them are in the side lakes (guarded by monsters), last one is in the middle where you have to fight a boss.

This boss is basically the same as the previous boss you fight except that this time there are 2 of them. At you currently (at you least you are level 42 by now), you shouldn't have a problem take this boss down.
Steal:
- (I-01) Remedy x2
Strategy:
- Focus on one serpent at a time, their single attack damage is around 1200, and it's poison damage is about 2500HP. As long as you keep healing and keep your HP above 3000 you are good.
- This boss is weak against "Slow" so you can have Valrika apply slow on them. Additionally, "Crash" and "Break" are also very helpful debuffs.
- Leo's basic combo with "Concentrate" + "Samidare (Fire+1)". Ez's "Quick All", "Attack Up All", "Defend Up All", and "All Potion L v2" will cover your basic need. Valrika's "Arrow Rain +2" also deal huge damage to the boss, and it can hit both of them.
Reward:
- Growth Crystal