Raid Boss reward chance is reduced based on the level difference.
Boss is higher: +5 - 85%, +6 - 70%, +7 - 50%, +8 - 35%.
Player is higher: +6 - 85%, +7 - 70%, +8 - 50%.

If player is 9 or more levels higher, Raid Curse is applied.

This Riba follows Arachne Orfen. Unlike other monsters living in the Sea of Spores, he possesses great intelligence and profound magical knowledge. At Orfen's command, he is searching for flaws in the Ivory Tower's magic force field, which blocks the spores from advancing.

Takes 10% increased damage from attacks that are effective against Bugs.

Speed +5
Evasion +5
P. Skill Evasion +3%
M. Skill Evasion +3%
Resistance to Spear +10%

Max HP -5%
Resistance to Fire -10%
Resistance to Fist -10%

Speed decreases momentarily.

Paralyzed and unable to move momentarily.

Applies to nearby enemies:
Poison: -32 HP per sec.