Development and updates on this website have come to an end. There won't be any more update in the foreseeable future.
More details here 
Kleken
Illusory Tentacle
It looks like it once belonged to some kind of deep-sea monster, and though Kleken claims that he created this tentacle using his own special Luminatics. Its true source is unknown.
Shivering Tentacles
Passive
After using a Chain Combo, touches 4 adjacent enemies in a cross shape and inflicts Fright for 1 round if the enemy's HP is below 80%.
Fear: Frightened silly, will run away from enemies for 1 round.
Level details
Level 1
Total bonus stats:
ATK: 30DEF: 10HP: 50Counter Bonus: 3%
100
Level 2
Total bonus stats:
ATK: 60DEF: 20HP: 100Counter Bonus: 7%
5
400
10000
Level 3
Total bonus stats:
ATK: 60DEF: 20HP: 100Counter Bonus: 7%
10
800
20000
Level 4
Total bonus stats:
ATK: 90DEF: 30HP: 200Counter Bonus: 11%
5
500
30000
Level 5
Total bonus stats:
ATK: 120DEF: 40HP: 300Counter Bonus: 15%
5
500
30000
Level 6
Total bonus stats:
ATK: 120DEF: 40HP: 300Counter Bonus: 15%
10
1000
50000
Level 7
Total bonus stats:
ATK: 170DEF: 55HP: 450Counter Bonus: 20%
5
600
60000
Level 8
Total bonus stats:
ATK: 220DEF: 70HP: 600Counter Bonus: 25%
5
600
80000
Level 9
Total bonus stats:
ATK: 270DEF: 85HP: 750Counter Bonus: 30%
5
600
100000
Level 10
Total bonus stats:
ATK: 270DEF: 85HP: 750Counter Bonus: 30%
10
1500
200000